01.Musical Tennis no Oujisama (MTO)

Seigaku Regulars

Echizen Ryoma played by Yanagi Kotaro

Tezuka Kunimitsu played by Takigawa Eiji

Fuji Syusuke played by Kimeru

Oishi Shuichiro played by Tsuchiya Yuichi

Kikumaru Eiji played by Ichitaro Yamazaki (Nagayama Takashi*)

Momoshiro Takeshi played by Moriyama Eiji

Inui Sadaharu played by Aoyama Sota

Kaidoh Kaoru played by Gomoto Naoya

Kawamura Takashi played by Abe Yoshitsugu (Morimoto Ryogi*)

*They played said roles during the summer run of the musical

Ichinen Trio

Horio Satoshi played by Ishibashi Yusuke

Kato Kachiro played by Toyonaga Toshiyuki

Mizuno Katsuo played by Hotta Masaru

Others

Echizen Nanjiroh played by Ueshima Yukio

Arai Masashi played by Morikawa Jiro

Ikeda Masaya played by Kamai Terumichi

Hayashi Daisuke played by Osanai Masaki

Sasabe played by Katsuo

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01. This is the Prince of Tennis

>>>>sung by the Seigaku Regulars & Ichinen Trio

02. Kore ga Seigaku no Tennis bu nanoda!

>>>>sung by the Ichinen Trio

03. Kore ga Seigaku Regular-jin nanoda!

>>>>sung by the Seigaku Regulars and Ichinen Trio

04. Ore wa Momo-chan ~ Seigaku no Abarenbo

>>>>sung by Moriyama Eiji [Momoshiro Takeshi] (back-up vocals by the Ichinen trio)

05. I'm Always Winner

>>>>sung by Yanagi Kotaro [Echizen Ryoma]

06. Haji wo kake! Ryoma

>>>>sung by Morikawa Jiro, Kamai Terumichi & Osanai Masaki [Arai, Ikeda & Hayashi]

07. I'm Always Winner (reprise)

>>>>sung by Yanagi Kotaro [Echizen Ryoma]

08. The Regulars

>>>>sung by the Seigaku Regulars

09. Ore wa Mamushi

>>>>sung by Gomoto Naoya [Kaidoh Kaoru]

10. Ore wa Burning

>>>>sung by Abe Yoshitsugu, Kimeru, Aoyama Sota & Ichitaro Yamazaki(Nagayama Takeshi) [Kawamura, Fuji, Inui & Kikumaru]

11. Kikumaru vs. Fuji ~ Rival na Futari

>>>>sung by Kimeru & Ichitaro Yamazaki(Nagayama Takeshi) [Fuji & Kikumaru]

12. The Regulars (reprise)

>>>>sung by the Seigaku Regulars

*13. You Got Game

>>>>sung by Kimeru (if you're a PoT fan, you should recognize this as the first ending song of the anime)

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Cast and Music List from Wikipedia (yes, unreliable as it sometimes is, this is right on point).