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 peaked at an estimated 400,000 people, was now reduced to 30–40,000, many of whom had waited to catch a glimpse of Hendrix before leaving during his performance. The festival MC, Chip Monck, introduced the group as "the Jimi Hendrix Experience", but Hendrix clarified: "We decided to change the whole thing around and call it "Gypsy Sun and Rainbows". For short, it's nothin' but a "Band of Gypsys"". Hendrix's performance featured a rendition of the U.S. national anthem, "The Star-Spangled Banner", during which he used copious amounts of amplifier feedback, distortion, and sustain to replicate the sounds made by rockets and