<Table> <Tr> <Td> "I've Seen Better Days" (1978) </Td> <Td> "He's the Greatest Dancer" (1979) </Td> <Td> "We Are Family" (1979) </Td> </Tr> </Table> <Tr> <Td> "I've Seen Better Days" (1978) </Td> <Td> "He's the Greatest Dancer" (1979) </Td> <Td> "We Are Family" (1979) </Td> </Tr> <P> "He's the Greatest Dancer" is a 1979 song by the American vocal group Sister Sledge . Released on February 3, 1979, The song was written and composed by Bernard Edwards and Nile Rodgers, and recorded for their successful 1979 album We Are Family . Billboard named the song #66 on their list of 100 Greatest Girl Group Songs of All Time . </P> <P> The song was released as the lead single from the album at the beginning of 1979 crossing over from the clubs--its 12' version was shared by the "We Are Family" and "Lost in Music" tracks"--to R&B radio giving Sister Sledge a number one hit on both Billboard's Dance and R&B charts in March 1979 . The song reached number nine on the Billboard Hot 100 in May; it might have risen higher, except that in the same month, Atlantic Records, prompted by the overwhelming club response to "We Are Family," sent the last - named track to radio . The song was also a hit in Australia (#5), the Netherlands (#1) and the UK (#6). "He's The Greatest Dancer" was sampled by Will Smith in his 1997 number one hit single "Gettin' Jiggy Wit' It," the first selection he released from his album Big Willie Style . In 2000, DJ Tony Touch recorded a version of the song, entitled "I Wonder Why? (He's the Greatest DJ)," whose lyrics were sung by Keisha Spivey and Pam Long of R&B girl group Total . The song was recorded and released by Dannii Minogue in 2007 and was an international Top 40 hit; it was also sampled by a Russian pop group Hi - Fi in their 1999 song "Pro Leto" (translated as "About Summer"). Robert Hood released a Techno track based on the Hook of this song on his label M - Plant . Nick Holder sampled the song on his 1997 album One Night in the Disco . </P>

Who sang i wonder why he's the greatest dancer