Guillermo Vicente Misa III, nicknamed "G3" is a Filipino singer/songwriter and recording artist based in Los Angeles.

G3 started playing acoustic guitar at the age of 13 when his dad, GV Misa (singer/actor/commercial model) taught him some 3 chord Beatles and Beach Boys songs.

At age 15, he played the electric guitar and formed his first band 'Trial and Error' along with his classmates from De La Salle Santiago Zobel School.

The line up was RJ Oca on vocals, Raton del Gallego on guitar, Boom Jose on drums and Mali Andres on bass.

[6] He went to Pink Noise recording studio thinking he would audition for guitars but he was asked to sing instead.

His vocal audition made it straight into Mystery's album "Jigsaw" released under Star Records.

In 2002, he became the Application Development Manager for Jollibee Foods Corporation, one of the biggest companies in the Philippines.

G3 wrote the songs "I don't wanna lose you" and "Sekreto" and co-wrote "Paradise", "Let's Dance", "Healing Hearts", "Why" and "Swim to the Sky".

On November 12, 2014, G3 released his debut solo album entitled "Never Look Back" published by Claymind Music.

[7] His carrier single "Habangbuhay" featured Filipina singer and actress Geneva Cruz on its music video which was filmed in Los Angeles.