One of the most prolific musicians and songwriters of 20th century Paul McCartney turns 79 today. Daughters Stella and Mary McCartney posted an adorable message in celebration of their famous dad.

Fun Facts about Paul McCartney:

• His first name is James

• He is an excellent drummer.

• His first instrument to learn was a trumpet. His father was a trumpet player in a jazz band.

• He gets star-struck around Bob Dylan