In this lesson, we’re going to learn “Ticket to Ride” by the Beatles (That’s the YouTube link incase you want to watch it there). This is a super easy song to play and not only that, but it’s got great melody. I don’t actually think I know a Beatles’ song that doesn’t have great melody, but anyhow…
Watch the video below and under it we’ll dig down into the theory behind it.
Ticket to Ride is tonally in the key of A Major, but it does break out of key a bit. If you’re not familiar with musical keys, then use that link there to check out a lesson here on the site to catch you up to speed. For those of you familiar with keys then you know we first build the A Major Scale before we harmonize out to get our 7 chords (or triads) in the key of A Major.
So, after we do that we have the notes A – B – C# – D – E – F# – G# and back to A. When we look at the chords used in Ticket to Ride, we see several notes that don’t fall in key. What about that D7 chord (dominant 7th)? Its notes are D – F# – A – C…so we can see that C (the 3rd scale degree) is off by a half-step or semi-tone. The other chord that doesn’t fit in key is the use of G Major here. Its notes are G – B – D…so we can see that G (the 7th scale degree) is also off by a half-step. What’s happened here? We have a flattened 3rd and 7th. This is a really common thing to do in the Blues and something the Beatles did a ton.
By these two “out of key” chords only being off by one note each, the other notes are in fact in key and contain notes that the melody is using, so it works. This is the real power of harmonization. When you understand that every song is really melody being supported by chords, then the flood doors open to make your choice of chords open increasingly.
The most common thing to note is that the melody note I happen to sing at any point in my song should be contained in the chord I choose to play over it (to create tonally pleasing music at least). The most common and consonant harmonization is to have the melody be either the 1 (root), 3rd, 5th or 7th scale degree of the chord you choose. 6ths and 4ths are okay too…4ths are probably the least common.
Just know that roots, 3rds and 5ths are the most common, while 7ths create tension and 6ths flow pretty smooth…like 3rds. If that’s at all confusing then follow this example.
If I’m singing a melody and hit an ‘A’ note at one point and think, ‘hmmm…what chord would sound good over that?’ If my song was in A Major, an A Major chord would work, F# minor chord, and D Major chord in key based on root, 3rd and 5th harmony. Our ‘A’ note is the root of A Major (A – C# – E), the 3rd of F# minor (F# – A – C#), and the 5th of D Major (D – F# – A).
Additionally, in key we could ask what other chords could contain an ‘A’ note? We could use Bmin7 (B – D – F# – A) where are ‘A’ note takes the 7th degree. We could use C#min6 (C# – E – G# – A), where ‘A’ takes the 6th scale degree, or we could use E Major 11 (E – G# – A – B), where ‘A’ takes the 4th or 11th scale degree (11 just means an octave higher, like how 1 is also 8 when our scale repeats).
Those could all be choices and you could test it out to see how it would sound to sing an ‘A’ note and play each of those chords. You’ll find the sound appears to change, even though you continue singing the same note! Fascinating (to me at least). That’s the power of harmonization, and it’s easy to see how one could play a chord ‘out of key’ over that ‘A’ note, like D7, because the chord still contains an ‘A’ note. That’s what the Beatles have done.
This is a ton of information, but I hope it has been helpful and opened your eyes a bit as to the incredible power of understanding music theory. If you’re wanting to really take your theory understanding further, then I’d definitely recommend you check out my guitar course here on the site called “Music Made Easy“. It’s a comprehensive course that teaches you the fundamentals of theory and how to apply that to guitar to truly free up your playing and creativity to play chords anywhere.
Feel free to ask any questions or leave feedback in the comments below, and I look forward to hearing from you.
To Your Music Success,
Andrew











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