A recent vocal collection album from Falcom, named VOCAL features a number of vocal pieces that have all been individually released on multiple discs. With VOCAL, you can get them all in one place.
The tracks are:
1. Gin no Ishi, Kin no Tsubasa (The Legend of Heroes Sora no Kiseki SC) by Hiroko Yamawaki
2. Hoshi no Arika (The Legend of Heroes Sora no Kiseki FC) by Umi
3. Cry for Me, Cry for You (The Legend of Heroes Sora no Kiseki the 3rd) by Kanako Kotera
4. Josephine (Sorcerian Additional Scenario Vol. 1) by Hiroko Moriguchi
5. In Adventure World (Ys II) by Pic
6. Lilia ~English Version~ (Ys II) by Akino Arai
7. All Because of You (Sorcerian) by Charito
8. Endless History (Ys) by Shoko Minami
9. Kaze no Monologue (Dragon Slayer: The Legend of Heroes) by Akino Arai
The album is priced at $7.99, or you can buy the tracks individually at $1.29 each.