Purple Haze track on the American release of "Are You Experienced" on August 23, 1967. Because of the song's airplay on underground FM radio, the album became more popular than Hendrix's singles. One of Hendrix's most popular songs, "Purple Haze" appears on numerous compilation albums. Some of these include "Smash Hits", "The Essential Jimi Hendrix", "The Singles Album", "Kiss the Sky", "", "The Ultimate Experience", "", "", and "The Singles Collection". An alternative version recorded at the same time, but with different vocal and guitar overdubs, is the first song on "The Jimi Hendrix Experience" 2000 box set. Live recordings of "Purple
Jimi Hendrix and directed by Jimi Hendrix". During the "Electric Ladyland" recording sessions, Hendrix began experimenting with other combinations of musicians, including Jefferson Airplane's Jack Casady and Traffic's Steve Winwood, who played bass and organ, respectively, on the fifteen-minute slow-blues jam, "Voodoo Chile". During the album's production, Hendrix appeared at an impromptu jam with B.B. King, Al Kooper, and Elvin Bishop. "Electric Ladyland" was released on October 25, and by mid-November it had reached number one in the U.S., spending two weeks at the top spot. The double LP was Hendrix's most commercially successful release and his only number one album. It