John Lennon's musical instruments were both diverse and many, and his worldwide fame resulted in his personal choices having a strong impact on cultural preferences.
For instance, Lennon's jamming on a piano together with Paul McCartney led to creation of "I Want to Hold Your Hand" in 1963.
[1]Lennon's musicianship went beyond guitar and piano, when he showed his proficiency on the harmonica in early Beatles records.
[2] According to Lennon, it was Julia who introduced him to rock 'n' roll and actively encouraged him to pursue his musical ambitions.
He recorded his, Ono's and their baby's heartbeat, for sounds on the Wedding Album and Unfinished Music No.