<P> Other recordings from this period, such as two Smile tracks ("Silver Salmon" and "Polar Bear"), "Rock and Roll Medley" (a live encore staple from the era), and the infamous track "Hangman" (whose existence was long denied officially, beyond live concert recordings), have surfaced in the form of a studio acetate disc . </P> <P> Though the album was completed and fully mixed by November 1972, Trident spent months trying to get a record company to release it . After eight months of failing that, they took the initiative and released it themselves in 1973 . During this time, Queen had begun writing material for their next album, but they were disheartened by the current album's delay, feeling they had grown past that stage, even though the record - buying public was just getting wind of them . They recorded two BBC sessions during the interim . The first single, "Keep Yourself Alive" (the Mike Stone mix, now considered the standard album version) was released a week before the album (UK dates, 6 and 13 July respectively). The track length was edited for release in the US, from 3: 47 to 3: 30 . The US single was issued in October . All countries had the B - side "Son and Daughter". The album was released in the US on 4 September . </P> <P> Elektra Records released a single of "Liar" in a heavily edited form on 14 February 1974, with the B - side "Doing All Right". Elektra later reissued the edited version of "Keep Yourself Alive" in July 1975, this time with the rare double B - side (rare for a 7" single) of "Lily of the Valley" and "God Save the Queen". Both versions are unique compared to the album versions . </P> <P> Hollywood Records released a CD single featuring five versions of "Keep Yourself Alive" to promote the forthcoming Crown Jewels box set (1998). The versions on the CD are: "Long Lost Re-take", "BBC Session No. 1 Version", "Live Killers Version", "Album Version (Unremastered)", and "Album Version (1998 Remastered Version)". </P>

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