​Here are those same examples in sheet music format:

The challenge with ostinatos and sequences is that they're structurally very rigid. But that's precisely where they get their power: they're incredible at establishing moods and carrying the music in clear directions.

But Alan Menken also often uses thirds to create his own, free-flowing melodies, such as the following gruesome duet from Hunchback and snazzy, finger-snapping bridge from Newsies.

In the Hunchback duo, Frollo and Quasimodo sing short phrases based almost exclusively on thirds. Thirds are useful in duets, because they are very consonant, and they form the most basic building blocks of tonal chords. For these reasons, they're relatively easy to harmonize, which is a load off the shoulders when trying to blend two simultaneous melodies.

​This snazzy bit from Newsies uses open thirds, omitting the middle note of each interval. Leaping around from syncopated note to syncopated note, this use of open thirds creates a feeling of lightness, joy, and happy-go-luckiness:

Of course, the happy-go-luckiness of these open thirds can be snuffed in a puff, when used for a rigid, choppy, ostinato such as that in Randy Newman's song "Friends on the Other Side" from Disney's The Princess and the Frog.

​Good stuff. Here's the sheet music:

A lot of folks think that music is just about long, flowing melodies and longer, nerdier chord progressions. But that's missing the trees for the forest. Just as hand gestures and facial gestures add extra meaning to vocal speech, so, too, do itty-bitty musical gestures contribute to the flavor and meaning of a song.

Alan Menken is a MASTER of musical gestures, and one of these days I'll write about the multitude of juicy, delectable instrumental gestures in his background music for Aladdin. It's part of what makes the Aladdin soundtrack so expressive and engaging.

But for now, let's have a listen and look at a few 3rds-based gestures in his vocal melodies.

The choruses to "I See The Light" (Tangled) and "Go the Distance" (Hercules)  are loud and exciting and triumphant and heroic... but if you want to know why that is, you have to look at the first three notes. Like a musical fist pump, each of these choruses begins with a sweeping gesture from scale degree 6 up to scale degree 1. They don't just break out into song; they leap into song.

​In "Friend Like Me" (Aladdin), the Genie doesn't just sing; he laughs, he make funny sounds, he throws around little exclamations... and all these "extra" details are performed via charming musical gestures. Here are just a couple of them, which are based on the interval of a 3rd:

​And here's the sheet music:

Ready to see something awesome? "The Mob Song" from Beauty and the Beast combines 3rds-based ostinatos, sequences, free-flowing melodies, and rhetorical gestures, all in a single verse!

- It begins with an emphatic gesture (a rising minor 3rd from scale degree 1 to 3), which immediately sets a dark and hurried tone.

- This gesture is then turned into an ostinato that wavers between two minor 3rds, one between scale degrees 1-3 and the other between scale degrees 2-4.

- The entire first phrase (emphatic gestures + ostinato) is then repeated a step higher, initiating a sequence.

- Then the same 3rds-based emphatic gesture is used as the basis for a free-flowing melody.

- The verse concludes with an ascending sequence based, again, on that same 3rds-based emphatic gesture.

Sooooooo cool!!

The opening song from "Aladdin" also combines 3rds-based ostinatos, sequences, free-flowing melodies, and rhetorical gestures. My analysis below only covers the first half of the song, but I should warn you that the second half is also heavily based on 3rds as well. My gosh, does Alan Menken LOVE to use 3rds, or what?!

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