Occassionally, a musician struggles to find acceptance for his/her work not because of a lack of musical pedigree, but because of an excess of it.

I'm talking about musicians whose parents were legendary musicians.

Julian and Sean Lennon and Dhani Harison are all young musicians who have had varying degrees of success in their professional musical careers, but all three face the same obstacle: their fathers were John Lennon and George Harrison, legendary rock musicians and former members of the Beatles.

The Lennon brothers and the younger Harrison have certainly had to face this hurdle in their own musical careers; no matter what, it seems, their work will be compared to their fathers', and probably will always have a hard time measuring up.

Nancy Sinatra always had this problem too in comparison to her legendary father, Frank.

Jakob Dylan actually managed to experience some success with his band the Wallflowers during the 1990s, completely independently of his father Bob Dylan. Dylan, however, is the exception that seems to prove the rule.

Examples of this can probably be found as early as the Strausses, or even earlier.