Marvin Gaye | What’s Goin’ On

Marvin Gaye’s soul/R&B classic “What’s Goin’ On” (1971) modulates at 1:38 and then back to the original key at 2:06 as it transitions into another verse. Gaye’s consistent use of 7th chords only added to the track’s rich harmonic tapestry. Rolling Stone ranked the album featuring the single #6 on its list of “The 500 Greatest Albums of All Time.” From AllMusic‘s reverent review: “What’s Going On is not only Marvin Gaye‘s masterpiece, it’s the most important and passionate record to come out of soul music, delivered by one of its finest voices .. Gaye meditated on what had happened to the American dream of the past … arguably the best soul album of all time.”

The Stylistics | Betcha By Golly Wow

In the 1970s, Philly Sound/Philly Soul was similar to Motown, yet also distinct from it — mostly due to its more adventurous harmonies. The Stylistics, one of most popular groups working in the genre, scored 12 R&B top ten hits in a row in the 70s.

This 1971 release changes key twice during the 30-second intro alone (0:14 and 0:28) — pivot modulations aided by colorful compound chords.

Stevie Wonder | I Never Dreamed You’d Leave in Summer

A lesser-known beauty from 1971 — a slice of “Little Stevie” Wonder’s nearly bottomless catalog of musical miracles. Co-written by Syreeta Wright, the tune only made it to #78 on the Billboard Hot 100, but it remains one of the most enduring of Stevie’s many ballads. Modulation at 1:41.

Five Stairsteps | O-o-h Child

Q: What do Lisa Loeb, The Spinners, Trey Anastasio, and Milton Nascimento have in common?

A: They’ve all covered the classic R&B tune by the Five Stairsteps, “O-o-h Child.”

Not content to wait for a bridge or a last verse, this 1970 release features modulations starting almost right out of the gate (0:38, between the first verse and the first chorus). The track hit top 10 status in both the US and Canada.