Bass guitar in 1958. 1956 saw the appearance at the German trade fair "Musikmesse Frankfurt" of the distinctive Höfner 500/1 violin bass made using violin construction techniques by Walter Höfner, a second generation violin luthier. The instrument is often known as the "Beatle Bass", due to its endorsement and use by Beatles bassist Paul McCartney. In 1957 Rickenbacker introduced the model 4000 bass, the first bass to feature a neck-through-body design in which the neck is part of the body wood. The Fender and Gibson versions used bolt-on and glued-on necks. With the explosion of the popularity of rock music in the
Real Love (Beatles song) at McCartney's studio in Sussex, with the intention of producing another single. Added to the demo were the sounds of a double bass (originally owned by Elvis Presley's bassist, Bill Black), Fender Jazz bass guitar, a couple of Fender Stratocaster guitars, one of which was Harrison's psychedelically-painted "Rocky" Strat (as seen in the "I Am the Walrus" video), as well as a Ludwig drum kit. Other than their regular instruments, a Baldwin Combo Harpsichord (as played by Lennon on the Beatles song "Because") and a harmonium (which appeared on the band's 1965 hit single "We Can Work It Out") were