Pianist Ethan Iverson released his first album, School Work, in 1993, when he was 20. In about 1997, he started playing with bassist Reid Anderson, and at the turn of the millennium, they connected with drummer Dave King and formed the Bad Plus. That trio was one of the breakout jazz groups of the early 21st century, releasing 13 albums in 16 years and selling a surprising number of records along the way. They were a lot of listeners' gateway into jazz, particularly because of their habit of arranging pop and rock songs like Nirvana's "Smells Like Teen Spirit" and Black Sabbath's "Iron Man" for piano trio. But once the covers got people in the door, they heard tightly arranged, high-energy original compositions by all three members.