They told me that Led Zeppelin, AC/DC, Black Sabbath, Ozzy Osbourne, Blue Oyster Cult, Simon & Garfunkel, Van Halen, and Journey had to go. That was because my "teacher" did not like any of those artists.
Later, they wanted me to throw away all Michael Jackson records, that I had already paid for. Like further playing his music was supporting "that apostate"--after the records were bought. They also wanted Culture Club thrown away because Boy George does horse (like I am going to take horse just by listening to their music). In fact, just about everything that had even the mildest sexual innuendo was "bad".
Part of it was "stumbling others". I had a song Saturday Night's Alright for Fighting since it was out in August 1973, and that was a big favorite through college (where alcohol was freely available). I did not get into trouble with that song, but they told me that, after all that time, I would get into a drunken brawl just by listening to it. Upon telling them that I listened to it heavily through college without a drunken brawl, they told me that I still had to throw it away because someone else might think it's OK, listen to it, and get into a fight at the bar. (Well, that's their problem.)