[3] In 1999, he signed as a recording artist in the Jett Pangan Group and produced an Extended Play and an album before it was dissolved in 2001.

He was later recruited by Rivermaya in May 2001 with Japs Sergio (from Daydream Cycle) and Kakoy Legaspi (from Mr. Crayon) after the departure of the original bassist Nathan Azarcon and session/touring guitarist J-John Valencia (who left by the summer of 2001).

[4] On May 29, 2024, Elgar released a music video for the song "We Are Not Heroes" under a new moniker Greenman Six on his official Facebook account and newly formed YouTube channel.

[5] Following this, Elgar also released music videos for "Hangin" on July 5, 2024, and "Andito Lang Ako" on August 11, 2024 on his new YouTube channel.

Elgar previously worked as a writer for ASAP, a Philippine television musical variety show produced by ABS-CBN.