Personnaly, I add the key at the end of the file name :)
Branigan, Laura - Gloria (Sf) Eb
Cara, Irene - Flashdance (Ti-diable) F
Cher - Believe (Sttw) Eb
Culture Club - Do you really want to hurt me (SC) G
Culture Club - Karma chameleon (SC) Bb
Debarge - Rhythm Of The Night (SC) C
Haddaway - What Is Love (SC) Gm