3 breaks from 1991: hegdehog?, "..laser back"

Hi,

i've extracted those 3 tracks from various mixtapes from '91:

1) Sounds like Hedgehog Second Rush but different melody
2) Happy piano
3) Vocal "... laser go back" or something

Zippyshare.com (or attachment)

Any hints?

Many thanks!

PS: Attachment contains only the first song...

All 3 tracks in the attachment:

1 http://www.discogs.com/Structural-Da.../master/469268