How to Write Suspenseful Soundtrack Music • Music Theory from Mike Oldfield "Tubular Bells" The Exorcist (1973) theme

Hack Music Theory

How to Write Suspenseful
Soundtrack Music.

Free PDF Tutorial
includes multitrack MIDI file

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Intro.

The dictionary definition of suspenseful is “causing a feeling of excitement or nervousness because you are waiting for something to happen”.

That perfectly describes the intro of “Tubular Bells - Pt. I” by Mike Oldfield.

It’s easy to hear why The Exorcist (1973) director William Friedkin chose this music for his film. Recall that classic scene where Chris starts walking home alone as the “Tubular Bells” intro begins. Eeek! Talk about “waiting for something to happen”.

If you wanna make music that keeps people listening because they need to know what happens next, then knowing how to create suspense is essential. Mike Oldfield has given us a masterclass with this music. So, inspired by “Tubular Bells”, here’s our 4-step method for writing a suspenseful melody. But first… Tea!

Step 1. Odd

One of the first things we notice about the intro of “Tubular Bells - Pt. I” is that it’s in an odd time signature. If you count along with that piano part in the intro, you’ll count 15 beats. So, change your DAW’s time signature to 15|4 and set the tempo to 150 BPM.

On closer analyses of the piano part (i.e. where its melody repeats), it becomes apparent that the time signature is actually one bar of 7|4 followed by two bars of 4|4. But as that adds up to 15|4, we’ll just go with that to keep things simpler.

Next, create a one-bar loop of 15|4 on your piano track, with the grid on 1/8 notes. We’re gonna start by writing a rhythm on E (the root), using only 1/8 notes and 1/8 rests. You can do whatever you want, but don’t play more than two notes in a row. Also, only make your rhythm seven 1/4 notes long, i.e. one bar of 7|4.

7|4 rhythm (on E)

Step 2. Pitch

Now it’s time to turn this rhythm into a melody! Mike Oldfield uses the E natural minor scale for this piano part, so we’ll use it too.

E natural minor scale

1	2	♭3	4	5	♭6	♭7
E	F♯	G	A	B	C	D

You may be wondering why F♯ (2) is in red. That’s because it’s out-of-bounds! Yep, you can’t use that note in your melody. Why? Well, we’re gonna create some suspense all of our own here, as we’re not revealing the reason for this until Step 4. One more tiny guideline here. If you wanna use E, use the high octave (i.e. the 8).

Without the F♯ (2) you still have six notes, which is plenty, so write your melody by using all the usual elements, like a big range and a smooth contour. Need help with this? Use the Melody Checklist in our Songwriting & Producing PDF.

7|4 rhythm turned into melody, by moving notes to different pitches of E minor

When you’re happy with your melody, then copy and paste it (starting at beat 8).

7|4 melody copied and pasted (highlighted)

That gives us 14|4, so extend your melody by one note to complete the 15|4 bar.

Note added (highlighted) to end of melody, completing bar of 15|4

Now that you have the full melody, you can hear that it’s a 7|4 melody looping, except the loop has an extra beat that makes it eight 1/4 notes long (i.e. two bars of 4|4). That odd-time element from Step 1 has now become very noticeable!

7|4 melody looped, with looped version (highlighted) transformed into two bars of 4|4

The interesting takeaway here is that alternating between an odd time signature (7|4) and an even time signature (two bars of 4|4) makes the melody sound more odd. It seems counterintuitive, but the melody would actually sound more normal if it was exclusively in 7|4. The reason for that is because our pattern-loving brains will figure out an odd time signature after a few loops, and then get used to it. Therefore, alternating back and forth prevents us from adjusting to the odd time. So thanks to those 4|4 bars, the 7|4 continues to sound odd every time we hear it.

Step 3. Drone

This is the final piece of the piano part, and it’s the easiest. Simply draw in the root note (E) in all the rests. This drone on E creates two layers in your piano part, which not only adds depth, it also adds tension between the melody and its root.

Final piano part, with drone on root note (E) highlighted

Now that you’ve finished your piano part, you can have some fun with the orchestration by duplicating the track, then changing its sound (and octave). As this piano part is at a super high register, you can lower it by an octave on the duplicated track, then change the sound to a glockenspiel or anything suspenseful.

Step 4. Bass

That’s enough suspense! It’s finally time to reveal why you couldn’t play F♯ in your piano part, back in Step 2. This is gonna be pretty shocking! So, are you ready for a massive twist in the tale of this tutorial? Okay, here it is…

You’re actually not in the key of E minor, you’re in A minor.

WTF?! I know, right? That shocked us, too! This magic trick of Mike Oldfield’s is probably our favourite element of “Tubular Bells - Pt. I”. Let’s explore it in depth.

After the piano part has been playing for 50 seconds and the key of E minor has been well and truly established by the piano’s drone on E, Mike Oldfield brings in the bass guitar. But, the bass plays a drone on A for almost five 1/4 notes. WTF?!

Bass drone on A (highlighted) below piano part, which is muted and just there for reference

In building architecture, the lowest floor is the foundation. Same with music. The lowest instrument is the musical foundation. All the other instruments are like the floors built above. So, that A drone in the bass reframes the music around that keynote, which results in the listeners perception shifting as soon as the bass starts.

However, Mr Oldfield has one more magic trick up his sleeve…

A natural minor scale

1	2	♭3	4	5	♭6	♭7
A	B	C	D	E	F	G

But first, you’re probably wondering why the F (♭6) is in red. And don’t worry, we won’t make you wait for the answer this time. The F is out-of-bounds, too. Why? Well, as you can see if you compare the A minor and E minor scales, they only have one note difference between them. A minor has F, and E minor has F♯. The two keys are very “close” to each other, because they have six notes in common.

So by avoiding F♯ in the piano and F in the bass guitar, all the music consists of the six common notes. And as the piano part drones on E while the bass line drones on A, it actually sounds like the music is in both keys at the same time!

You see, if the bass played F, it would make everything sound like it’s in the key of A minor, because the bass guitar is our foundation. So, as long as the piano avoids F♯ and the bass avoids F, the music sounds like it’s in both keys simultaneously. This causes a lot of tension, and therefore, suspense. What a brilliant magic trick!

By the way, playing in two keys at the same time is called bitonality. Theoretically, it could be argued that “Tubular Bells - Pt. I” is not bitonal, because neither the piano nor the bass solidifies what key they’re in. But, the effect is certainly bitonal.

Right, let’s finish up the bass line now. So, in your bass guitar track, draw another longer note under the beginning of your looped 4|4 melody (i.e. from beat 8 onwards). These longer notes function as root notes of the implied chords in your progression. In other words, while you don’t have an actual chord progression here, these longer notes in your bass line create the equivalent harmonic effect. To learn all about implied chords, read our Melodic Bass Drop PDF.

Mike Oldfield’s implied progression consists of two chords, so feel free to keep it simple like that. We added a little more harmony, cos, well… we love harmony!

Longer notes added to bass line (highlighted) to create implied chord progression

When you’re happy with your implied chord progression, simply link up the longer notes with a variety of shorter notes. But remember, avoid playing that F, and also, be sure to give your bass line a big range and a smooth melodic contour. And with that, you’re done. So click play, sit on the edge of your seat, and feel the suspense!

Final bass line, with shorter “linking” notes highlighted

Make Music You LOVE.

I know you want to be a confident producer who finishes songs, and loves the results. In order to become a confident producer, though, you need decades of knowledge and experience. To gain that knowledge, you need a good teacher. To gain that experience, you need decades of practice. That’s overwhelming!

I understand that searching for a good teacher is frustrating. Most courses are taught by YouTubers who are not qualified in music, and are not qualified teachers either. The few who are qualified in both, have no industry experience. I feel your pain. Truly. Most of my music teachers were bad. That’s why I studied music and education in order to become a lecturer, and why I created Hack Music Theory.

Also, over my 30+ years of composing, I developed a unique method called Song-Whispering, which I’ve used to make music with multiplatinum Grammy winners. In my one-of-a-kind online apprenticeship, you’ll learn my method and turbocharge your music with my decades of knowledge and experience.

Enroll Now and stop wasting years of your life learning from bad teachers and trying to get better through trial-and-error. Transform into the confident producer you would be in 10+ years now, and start loving your music!

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