I need help to identify songs

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hai /mu/, yesterday i was dumping a old music cassette, i'm looking for the names of the songs in it, because the names are erased on the cassette.

can anyone help me to identify them?

1- https://www.dropbox.com/s/ihvilsm46hcdtpq/Abba.mp3?dl=0

This one is a mix of musics from abba, one of them is Abba - Lay all your love on me.
I'm looking for the guy that sings there.
https://www.youtube.com/watch?v=SuKcF1UzLTk&feature=youtu.be&t=245
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2- https://www.dropbox.com/s/hcv0lcan4rqzctb/Galaxy.mp3?dl=0

The name is actually a thing that i heard on the song.

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2- https://www.dropbox.com/s/ce66co3dqmwgyfr/Oh%20new%20new.mp3?dl=0

The same as the number #2, i don't know from where it is and the name is actually another code-name.

I tried to use midomi.com but it does not help me too much with these

Thanks!