Asia are an English rock supergroup formed in London in 1981. The most commercially successful line-up was its original, which consisted of four members of different progressive rock bands of the 1970s: lead vocalist and bassist John Wetton of King Crimson and U.K., guitarist Steve Howe of Yes, keyboardist Geoff Downes of Yes and the Buggles, and drummer Carl Palmer of Emerson, Lake & Palmer. Their debut album, Asia, released in 1982, remains their best selling album and went to number one in several countries. The lead single from the album, "Heat of the Moment", remains their top charting and best-known song, reaching the top 40 in over a dozen markets and peaking in the U.S. at #4 on the Billboard Hot 100 and #1 on the Billboard Mainstream Rock chart.