Led Zeppelin | All of My Love

1979’s “All of My Love” by Led Zeppelin is a rock ballad co-written by the band’s lead vocalist, Robert Plant, and Zeppelin’s bassist John Paul Jones. The tune was written in honor of Plant’s son, who tragically died of a sudden illness as a pre-schooler. From PopMatters‘ review: “the saddest and most heartfelt Zeppelin song … which hauntingly enough sounds like a foreshadowing of a band on the path to an impending and unforeseeable dissolution.” Indeed, the hugely popular band broke up the very next year in the wake of drummer John Bonham‘s death.

A direct whole-step modulation hits at the 4:25 mark.

Commodores | This Is Your Life

Busy mod scout JB contributes “This Is Your Life,” a single from The Commodores‘ second studio album, Caught in the Act (1975). Reaching #13 on the R&B chart, the track was written by the band’s most well-known member, Lionel Richie, who later went on to huge solo fame as a performer and songwriter.

After a lush chorus (starting at 2:38) which brings the entire band’s backup vocals into the equation, the modulation is at 3:24. The tempo of this soul ballad is so leisurely that it actually sounds completely plausible when played back at 1.25 speed!

Elton John | The Ballad of Danny Bailey

Elton John‘s iconic 1973 album, Goodbye Yellow Brick Road, sold over 30 million copies worldwide and was inducted into the Grammy Hall of Fame. The album featured “The Ballad of Danny Bailey,” a tune which seemed so authoritative that many fans thought it was about a real person. But AllMusic‘s review debunks that myth: the subject of the song was fictional.

The track starts with pivots between B minor and C major, builds to pivots between E minor and F major at 0:25, continues to grow in intensity with pivots between A minor and Bb major at 0:31, all supporting a melody ascending in pitch and intensity. At 0:49, the chorus is based on D major, but only tenuously — the lack of harmonic stability seems to reflect the song’s unsettling story. This complex song qualifies as “filler” between the far better-known hits on this legendary album.

Aretha Franklin | Til You Come Back to Me

Co-written and recorded by Stevie Wonder but never released until a subsequent retrospective album, “Til You Come Back to Me” (1973) was a huge hit for Aretha Franklin, reaching #1 on the R&B chart and #3 on the Hot 100 chart in 1974. The tune was later covered by over a dozen other prominent artists, ranging from Johnny Mathis to Cyndi Lauper. The short bridge (1:30 – 1:51) departs from the primary key of D Major.

Kenny Loggins + Stevie Nicks | Whenever I Call You Friend

“Whenever I Call You Friend” by Kenny Loggins and Stevie Nicks (1978) was released among a slew of late-disco tunes. The track stood out for its kinetic pop sound despite its string-heavy arrangement. There are plenty of modulations, particularly from the instrumental bridge (2:30) onward. The tune, written by Loggins and Melissa Manchester, went top ten in the US and Canada.

Neil Sedaka | Laughter In the Rain

Neil Sedaka‘s 1975 release, “Laughter in the Rain,” is well under three minutes long — but it packs in plenty of harmonic complexity. Sedaka had a long career as a Brill Building-based songwriter (including composing “Where the Boys Are” for Connie Francis) but also found his own success as a performer.

The F major of the intro and verse transitions to Ab major at the chorus (0:36) and then back to F major for the next verse (0:57), etc. The track hit #1 in the US and Canada — and #2 in Yugoslavia!

David Bowie | Young Americans

David Bowie‘s 1975 album, Young Americans, featured a title track which played up Bowie’s love for soul and R&B — a departure from his previous glam-rock style. R&B/soul vocalist Luther Vandross contributed backup vocals to the track. Self-deprecating as usual, Bowie described the album as “plastic soul…the squashed remains of ethnic music as it survives in the age of Muzak rock, written and sung by a white limey.” Modulation at 2:39.