6 Degrees of Black Sabbath

From The Beatles to Weezer in 9 steps

First we start with The Beatles
that has member John Lennon
that was married to Yoko Ono
that created the track AOS that was performed by Ornette Coleman
that was member of The Ornette Coleman Quartet
that has member Charlie Haden
that is the parent of Petra Haden
that was member of The Rentals
that has member Matt Sharp
that was member of Weezer

Path score is 146.67