the mock siren to Beck: "An ominous European-style police siren—courtesy of Beck's guitar—leads the way into a full-on six-string apocalypse with atomic bomb blasts and shards of scarified riffing." The multiple overdubbed guitar solos are played by both Beck and Page, or by Beck with Page on rhythm guitar, and "sounded like duelling fighter planes", according to journalist Bob Stanley. During the recording sessions, Beck provided some humour by imitating comments made by an attendant who examined members of the group at a specialty health clinic. Although Beck's recitation is broken up and unclear under the guitar solos, McCarty describes it as a "note-perfect impersonation... We fell about laughing and of course it had to stay on the record." After another verse and chorus, there is an instrumental closing section "which intensifies the chaotic, sinister tone of the song" that begins with droning feedback on the bass strings of the guitar, and includes multiple guitar lines over the main rhythmic accompaniment, before ending with a quick fade-out. Recording "Happenings Ten Years Time Ago" was recorded in London during breaks in the Yardbirds touring schedule. According to McCarty, it began when he, Relf, and Page went into a recording studio to develop some new material. Page brought along fellow studio musician John Paul Jones to provide the bass, since Dreja had yet to fully adapt to the instrument. The four proceeded to jam on some chords and lyrics and the song started to take form. However, there is some disagreement on the location and date for recording the basic song or backing track: McCarty identifies the IBC Studios in London, but does not give a date. Beck biographer Martin Power places an IBC session at the beginning of August 1966 (the group left for an American tour on 3 August). Russo indicates a basic track recording session at De Lane Lea Studios in London on 26 July. Group biographer Alan Clayson lists the 26 July IBC session as "likely cancelled" and that the basic track was recorded at De Lane Lea on 20 September. However, there is agreement for various overdubs made between 20 September and 2 October at De Lane Lea; Beck, who had been unavailable for the earlier sessions, recorded several guitar parts and his spoken passage during this time. The recording was engineered by Dave Siddle and the audio mixing was completed by about 3 October. Releases and