Sam & Dave: You Don't Know Like I Know
Before Chef, before Shaft, and before his 18-minute version of "By the Time I Get to Phoenix", Isaac Hayes was half of a potent Stax songwriting/producing duo with David Porter. Soul singers Sam & Dave were the prime beneficiary of their talents, having been gifted with classics like "Hold On, I'm Comin'", "When Something is Wrong with My Baby", and most notably "Soul Man". The first hit the duo had with Hayes & Porter was "You Don't Know Like I Know", which went to #7 on the black singles charts in March of 1966. It started a string of ten consecutive Top Twenty R&B hits for them.
In 1968 Hayes recorded his first album, which bombed. But his second album, Hot Buttered Soul (the one with the 18-minute version of "By the Time I Get to Phoenix") was the first in a series of hit albums that made him a star in his own right.
Incidentally, Porter also became a recording artist, but never achieved anything approaching Hayes' success.