“This Old Heart of Mine (is Weak for You)” by Isley Brothers

"This Old Heart of Mine (Is Weak for You)" was the Isley Brothers' one big score from their short stay at Motown, a Tamla single that hit in January 1966 with Ronald Isley out front on lead vocal. Holland–Dozier–Holland wrote it with Sylvia Moy, and Brian Holland and Lamont Dozier produced it, though the song had first been meant for the Supremes.

It made 12 on the Billboard Hot 100 and six on the R&B chart, but Britain took its time: the single stalled at 47 in April 1966, then came roaring back late in 1968 and sat at number three for two weeks that November, the best the group ever did on the UK chart. By 1969 the brothers had walked out on Motown to relaunch T-Neck, a label of their own.

Written with AI assistance from RockLists chart data, MusicBrainz and Wikipedia.