Here's information about the Ouran OST 1.
Release Date: July 26, 2006
Retail Price: ¥2,500
Omake: First press comes with bonus CD with two podcasts. Normal version (and first press) comes with one of four character cards (and something else I can't understand.)
Tracklisting
1. 桜キッス（TVサイズ）…河辺千恵子
2. GUILTY BEAUTY LOVE…須王環（宮野真守）
3. ドキドキ☆ワクワク♪…埴之塚光邦（齋藤彩夏）
4. いつも側に…銛之塚崇（桐井大介）
5. Ouran Concerto for oboe, 2 horns, violin and string
6. Waltz with Adonis for orchestra
7. Menuet of innocence for chamber orchestra
8. Theme for the cute one for orchestra
9. Sinfonietta C-dur
10. Scherzo for orchestra
11. Music for the Music Salon No.3 for trumpet and orchestra
12. Introduction and Tarantella for chamber orchestra
13. Polka Capriccioso for chamber orchestra
14. Sakura Kiss for string
15. Pavan for piano and orchestra
16. Nocturne for orchestra
17. Tango Brilliante for orchestra
18. Alla Marcia for orchestra
19. The powerful Motor Rhapsody for orchestra
20. Tranquillezza for string
*Tracks 5 - 20 are instrumental BGM songs.
I hope that track 20, "Tranquillezza for string", is that guitar riff from the end of episode 3, 5 and 10. I love that song! Hopefully it'll be a longer version, though, and not just 15 seconds...
~ Noodlehead