For the most part, harmonies played in this song can usually be described as standard major and minor chords. The beginning sounds very disjointed but in actual fact the first four chords are simply D, C#m, C and B. The fact that these chords are moving in a chromatic descending manner is what makes the music so disorientating.

Despite this, there are some interesting and unique chords used to provide richer harmonies with a greater sense of emotional depth. It is worth playing these yourselves and spending time either on your own or with others creating these clashing chords, appreciating how they can lend a sense of sophistication to the music.

• An augmented chord is used in bar 7 (Caug - 0'12) to provide a sense of dissonance on the word "clever" which supports Glinda's anger. The same is provided for Elphaba's section at bar 14 on the word "ambition" (Baug - 0'21).

• The example from bar 20 (0'32) notated below includes an Eadd2 chord on the second bar. This is heard every time this motif is played.

• The violin, flute and clarinet play a Csus4 chord on the second bar notated below from bar 24 (0'43).

(Other added note and sus chords are easy to spot on the score as they will contain two notes a step apart in the notation. Look through and identify some other examples, recognising how they sound.)

• Bar 110 (3'39) is a very stripped down chord but can actually be described as an A7 which is a dominant 7th, providing a greater pull in the perfect cadence. This adds a sense of certainty to Elphaba's phrase, "never bring us down".

• Slash chords are heard from bar 173 (Bm, C/F, Bb/Eb, C/Db - 5'39). This is when two different chords are heard simultaneously to produce a deliberate dissonance. This hugely contributes to the sense of turmoil at the end of the piece, representing the anger of the ensemble viewing Elphaba as the wicked witch.

The Book of Mormon is a comedy musical that is about two Mormon elders who are sent as missionaries to Uganda. "You and Me" is sung by these two characters as they fantasise about where they might be sent to spread the word of God. It is a particularly good example because it (perhaps intentionally) mimics Defying Gravity in many ways through its sense of style. As a result, it comes across as a parody of the song.

Though this song shouldn't offend anyone, the show holds a strict explicit content warning!!

• Look and listen to the chords when the tempo starts at 0'30. The song also includes lots of added note chords to provide a sense of excitement to the music.

• At 1'13 the song also has its own version of the "unlimited" section from Defying Gravity. An augmented chord is played here providing a dreamy sense of mystery as Kevin sings "something incredible".