This is exemplified by the song "Changes (Black Sabbath song)".

It is simply a cover of a Black Sabbath song.

The festival was named after a famous Black Sabbath song, which appears on their Sabotage album.

A notable use of ring modulation is the guitar in the Black Sabbath song "Paranoid".

They started playing Black Sabbath songs, but soon began composing their first songs, based on characters from the neighbourhood.

He felt it was a 'bum deal' that Gillan had to perform so many old Sabbath songs and none of his own.

The name of the piece was taken from a Black Sabbath song.

(What about the other good Black Sabbath songs, besides the three everyone knows?)

The album cover shows a group of beings that each represent specific Black Sabbath songs.

This is a Black Sabbath song off of the Paranoid album.