A post shared by Reyma Buan Deveza (@reymabd) on Aug 15, 2017 at 9:25pm PDT

MANILA -- Film and TV actor Baron Geisler will star in his first-ever musical as Tikbalang/Amerikano in Tanghalang Pilipino's upcoming rock sarwela "Aurelio Sedisyoso."

In an interview with ABS-CBN News on Wednesday, Geisler admitted that he is nervous about his stage debut, especially since it is outside of his comfort zone.

"Pero gusto ko lang sabihin na sobrang ang gagaling ng mga kasama ko. They're really terrific actors. Kasi sa film, pagdating doon napaka-kumportable kasi balwarte ko 'yon. Dito, kakaibang disiplina ang natutunan ko. I'm not a singer, you know it's sort of hard for me," Geisler said.

The actor said he auditioned to be part of the musical, which stars David Ezra who plays the lead role of Aurelio Tolentino.

Geisler said it was his discoverer who asked him to try theater.

"Noong time na 'yon I was sulking and depressed kasi kamamatay lang ng mommy ko. So sabi ko it's time for me to move on or move forward and I said yes. Twice ako nag-audition for them. So I'm so grateful sa Tanghalang Pilipino, 'yung sa kabuuan po," Geisler said.

"It was mind-blowing. Kasi akala ko dati ang dami kong alam. Noong pinasok ito na humbled down po ako. Kasi ito 'yung dapat makita ng mga tao na ang daming talent na nakakalibot. Minsan nga naiiyak ako sa sobrang galing nila, so napi-pressure po ako," Geisler added.

According to Geisler, they are now rehearsing every day for the original musical, which will run at the Bulwagang Aurelio Tolentino of the Cultural Center of the Philippines from September 1 to 17.

"Committed naman po ako sa lahat. Nandoon 'yung natututo po ako, 'yung pakikisama, pagmamahalan and I fell in love again sa craft. Kasi may ginagawa akong movie 'yung kay direk Brillante Mendoza, 'yung "Right To Kill.' When I'm there. I'm very relaxed, I know what I'm doing. Here, I always second-guess myself, which is a big no-no. But I'm not here to fail. Lalaban ako," Geisler said.

In a separate interview, director Chris Millado said they took Geisler to be part of the production after the actor agreed to their conditions.

"The turning point ay nung inupo namin si Baron. Kasi alam naman natin na may reputasyon si Baron off screen na medyo may pagkabarumbado. Pero alam din naman natin na magaling siya na aktor. So inupo namin at pinrangka namin sa disiplina na kailangang daanaan niya sa tanghalan. Sabi namin kaiba ito sa karanasan mo sa showbiz. Sa theater, 'di lang mababa ang bayad pero malaki 'yung hinihingi sa iyo na panahon at malaki sa iyo ang hinihinging disiplina. Sabi niya gusto niyang madaanan ang ganoong disiplina at gusto niyang ibigay ang kanyang more than 100% dito sa proyekto. We took his word for it, kaya namin siya tinanggap," Millada shared.

Millado also admitted that like him the whole production also feels nervous about Geisler.

"Lahat, hindi lang ako, 'yung buong cast, may kaba dahil nga unang-una first time niya sa tanghalan. Pangalawa, nandoon 'yung kaba na baka dahil sa nerbiyos niya ay kung anu-ano ang gawin. Siyempre ang nagbibigay sa amin ng pagkapanatag ng loob ay 'yung kanyang panata na talagang magpapasailalim siya sa disiplina. At isa sa disiplinang ito ay bawal ang alcohol o anumang makakasira sa kanyang palabas during rehearsals at saka sa actual performance. So far, mukhang sinusunod niya. So far so good," Millado said.

Here's a sneak peek of the musical as Geisler performed some of his scenes during the press conference.