Input (grade 11): John Henry "Bonzo" Bonham (31 May 1948 - 25 September 1980) was an English drummer and songwriter, best known as the drummer of the band Led Zeppelin.
Output (grade 12): John Henry "Bonzo" Bonham (May 31 1948 - September 25, 1980) was an English rock drummer, and was known for being a member of London hard rock band Led Zeppelin.