James Paul McCartney was born on June 18, 1942, in Walton Hospital in Liverpool, England, where his mother, Mary Mohin was as a nurse. His father Jim McCartney was absent from the birth due to his work as a volunteer firefighter during World War II.
Paul McCartney's father was a trumpet player and pianist who led Jim Mac's Jazz Band in the 1920s. He kept an upright piano in the front room and advised Paul to take piano lessons, but Paul preferred to learn by ear.
Paul McCartney's father Jim gave Paul a trumpet for his fourteenth birthday, but when rock and roll became popular, Paul traded it for a Zenith (model 17) acoustic guitar, rationalizing that it would be difficult to sing while playing a trumpet. He found it difficult to play guitar right-handed, but after noticing a poster advertising a Slim Whitman concert, and realizing that Whitman also played left-handed, he reversed the strings. Paul wrote his first song, “I Lost My Little Girl” on the Zenith.
At the age of fifteen, Paul McCartney met sixteen year old John Lennon and his band, The Quarrymen at the St. Peter's Church Hall fête in Woolton on July 6, 1957. The Quarrymen played a mix of rock and roll and skiffle, a type of popular music with jazz, blues and folk influences. John invited Paul to join the group soon afterwards.