What Was The First Album Released on Cassette Tape?

Throughout the 70s, 80s and early 90s, the audio cassette reigned superior. Near every car was built with a tape player installed, and special carrying cases filled the floors of automobiles everywhere. In fact, cassettes were a revelation. They provided a staggering amount of music in its small size, while also being resistant to the weathers. But what was the first ever released?