The Smashing Pumpkins was a rock alternative group led by Billy Corgan. The greatest hit by The Smashing Pumpkins was the 1996 number 3 hit 1979. 1979 was also a two-week rock number one song. The greatest rock hit by The Smashing Pumpkins was the two-week rock number one song Bullet With Butterfly Wings, which also spent three weeks at number 2 under My Friends by Red Hot Chili Peppers. The 1994 rock number one song Landslide was a long-time popular Fleetwood Mac song. In 2003, Billy Corgan led a side project with members of other groups including A Perfect Circle to create group Zwan whose songs are included below.