Here are a couple of tunes from an album I picked up in Paris a year or two back. It goes by the name of "Guinée 40ème Anniversaire Syliphone Vol. 1" and it was originally released in 1998 to mark forty years of independence (you probably worked that bit for yourself). The Syliphone label was most active in the 1970s, and I am guessing that is when these tracks date from.
"So I Si Sa" - Super Boiro Band
"Lalaba" - Kaloum Star
Internationally, Mory Kante is probably the biggest musical star to come from Guinea. Here is a clip of him gigging earlier this year to promote his new album.