Following the Beatles' example, many acts spent months in the studio creating their albums, focused on an artistic aesthetic and in the hope of winning critical approval. Among the many LPs influenced by "Sgt. Pepper" were Jefferson Airplane's "After Bathing at Baxter's", the Rolling Stones' "Their Satanic Majesties Request" and the Moody Blues' "Days of Future Passed", all released in 1967; and the Zombies' "Odessey and Oracle", the Small Faces' "Ogdens' Nut Gone Flake" and the Pretty Things' "S.F. Sorrow", all issued the following year. All rock albums were subsequently measured against "Sgt. Pepper". Discussing "Their Satanic Majesties Request", Wenner referred to "the post–"Sgt. Pepper" trap of trying to put out a 'progressive,' 'significant' and 'different' album, as revolutionary as the Beatles. But it couldn't be done, because only the Beatles can put out an album by the Beatles."