He has written and staged the musical plays First Name, Joseph the Dreamer,[2] So David..., Widows, Orphans, and Wildebeests,[1] Il Divino, and Sabel: Love and Passion.
In the 1990s, Santos also began singing in lounges, and his weekly comedy acts at Tita Lola's Café Alvarado became quite popular with young professionals, garnering him rave reviews in the papers.
It was then he was asked to direct a lounge show by jazz queen Jacqui Magno and its impact on his life encouraged him to abandon his performing career to fast become one of the country's top concert directors with a distinctive crossover directorial style that combines theater with pop and cutting-edge technology.
He has written, designed and/or directed more than 400 pop, rock and roll, and classical concerts totaling over 1,500 performances, working with artists such as Lea Salonga, Monique Wilson, Regine Velasquez,[1] Joey Albert, Gary Valenciano, Jamie Rivera,[3] Janno Gibbs, Ogie Alcasid, The Dawn, NeoColours, Introvoys, Raymond Lauchengco, Rico J. Puno, Imelda Papin, Rey Valera, Hajji Alejandro, groups like Tux, Men and Music, Boys Will Be Boys, newbies Morrisette Amon and Tanya Manalang, and opera singers Rachelle Gerodias and Byeong-in Park, as well as Grammy winners like Sandi Patti, First Call, David Pomeranz, and Broadway/West End artists Leo Valdez, Jose Llana, and Mig Ayesa.
"[4] He has often worked as lyricist to award-winning composers, such as Louie Ocampo,[5] Von de Guzman, Dan and Geri Gil, Marvin Querido, and Gerard Salonga.
He has done quite a number of spoken word recordings, several of which serve as vocal guide for the permanent exhibits of the Ayala Museum in Makati, and the Aguinaldo Shrine in Kawit, Cavite.
His latest achievement in video is the 10-part documentary on the life and works of International Spanish artist, Philippine Presidential Order of Merit Recipient, and Cross of Isabella Awardee -- Juvenal Sanso.
Over the decades, unsurprisingly, Santos was part of the formation of several crucial coalitions, among them, the Organisasyon ng Pilipinong Mang-Aawit (Organization of Philippine Singers), Philstage (composed of various professional theater and dance companies), and Trumpets, Asia's first fully-professional gospel theatre group.
With National Artist Ryan Cayabyab writing the music, Santos penned the lyrics of the theme song of the campaign: Manila Bay, Atin 'to!