Three favourites? Hmm, what are they today?
The Pogues
Fleetwood Mac
Spider Murphy Gang (Bavarian Rock Band)
Tomorrow it may well be different. Could just as easily be Boney M, Unit Four Plus Two and ELO. Or The Beach Boys, The Waitresses and The Who.
Or any one of hundreds of solo artists and a fair few orchestras.
Even in the genres I "hate" ([C]rap, Jazz, Country and Western) there are some songs I like.
50's, 60's 70's, 80's, medieval dance, Classical music, Swing (esp. Glen Miller and the "Big Band" style), Heavy Metal, Punk, Rock 'n' Roll, New Wave - I like all sorts of stuff.
My "favourites" depend very much on what I feel like at the moment - unless you go by a "which bands have the most songs you like?" metric which would put Beatles and Bee Gees in the top two (even though I don't always feel in the mood for either.)
Bookmarks