Twenty years ago, on May 4, 2002, Tom Waits released two albums, Alice and Blood Money. They were the 14th and 15th studio albums of Waits' career, dating back 29 years at that point, to March 1973.
It is quite unusual, of course, for a recording artist to release two LPs on the same day. But Waits wasn't the first. Guns and Roses did it, Bruce Springsteen and Elvis Costello had done this previously, for various reasons.