"Another Day, Another Heartache" by 5th Dimension

Before they became The 5th Dimension, Marilyn McCoo, Billy Davis Jr, and the gang were known as The Versatiles. Success came quickly for the newly branded group with "Up Up And Away" soaring to #7 in 1967. 

The group had a steady string of huge hits through to the early 70s, including classics such as "Aquarius/Let The Sunshine In" (#1), "Wedding Bell Blues" (#1), "One Less Bell To Answer" (#2), and "(Last Night) I Didn't Get To Sleep At All" (#8). Their last top 10 hit was "If I Could Reach You" in 1972.

Before the big hits, there was this catchy little-known number. "Another Day, Another Heartache" reached #45 in 1967, preceding the release of the smash "Up Up And Away".