2 9 africanamericanactors africanamericansingers analysis appreciation beatles biography chronology discography grammofoonplaten hardcore hardcore(music) hardcoremusicians history historyandcriticism jugendkultur music musicandsociety persoonlijkelevenssfeer popmuziek popsong popularmusic punkculture punkrockmusicians rockgroups rockmusic rockmusicians socialaspects socialaspectsofmusic songs thebeatles unitedstates verzeichnis zeittafel