allmusic

(In English). Portal built around articles by music journalists describing music genres, with links and reviews.

SecondHandSongs

(In English). Find out who performed the original version of a particular song, or who covered that song. Unlike many related sites, we try to be as complete as possible (not just performer and song title, but also songwriters and original media) and order the data in a reusable and maintainable way. The database already contains 48510 songs (12111 originals, 34988 cover songs and 1411 songs with samples) and 18126 artists (performers and songwriters).

SongFacts

(In English). Song meanings and song information, including album and chart position. Music trivia, title search, lyrics database.