For examples in popular music, see Direct Modulation.
1) Stephen Sondheim, “By the Sea”
From Sweeney Todd: The Demon Barber of Fleet Street (1979), words and music by Stephen Sondheim, performed by Annaleigh Ashford and Josh Groban
Audio: YouTube (2:01–2:42)
[Chorus]
AM7
By the sea
E7/A
Don't you love the weather?
AM7
By the sea
E/D
We'll grow old together
AM7/E
By the seaside
D/E
Hoo! Hoo!
E7 AM7
By the beautiful sea
[Spoken Dialogue Interlude]
| : AM7 DM7 : | (x4)
| : D♭M7 D♭7 : | (x2)
| : D♭M7 D♭add♭6 : | (x2)
[Bridge]
D♭M7
It'll be so quiet
That who'll come by it
D♭sus4 E♭m 7
Except a seagull?
A♭sus4 A♭7
Hoo! Hoo!
D♭M7
We shouldn't try it
Though, till it's legal
A♭sus4 A♭7 A♭m7 A♭9
For two - hoo!
Paula Maust, Expanding the Music Theory Canon: Modulation
Diverse Music Theory Examples: Tonicization, Pivot Chord and Direct Modulation, Common-tone Modulation, Abrupt and Enharmonic Modulations
Music By Women: Explore the Database (Click on the Harmonic Progression Filter on the left and select Modulation.)
Yale Musical Examples Database: See the "Harmonic/Scale" tab at the bottom. (Scrool to the bottom for examples of direct modulation in pop)