After the end of Wham! a year before, it was anyone's guess what would be next for Michael. At 24, he ended up releasing a classic album, named for one of his most memorable and enduring hits, "Faith." Written, produced and arranged by Michael himself, the song found him tackling classic rock & roll via a Bo Diddley–inspired beat and an Elvis Presley warble. The track was a landmark for the pop star, becoming the biggest-selling single of 1988.