He wrote over 70 songs during a career that spanned 30 years.

As of 2009 he is still performing, and has written over 1000 songs during his career.

Between 1900 and 1953 he wrote over 900 songs.

He then released 15 music albums and wrote over 200 songs.

Since that time he has written and recorded over 100 songs.

He has written over 300 songs in the past three decades.

He has written over 500 songs and constantly held world tours.

He has written over 45 songs in his career.

He has written and recorded over 700 songs since 1999.

He said that they had written over 30 songs, some during the writing process of Vol.