Since the 1990s, founder Sandro Ruoch had been composing songs while he was studying Law in the interior of São Paulo, some of which he performed at concerts and also when he was the lead singer of some cover bands.

Returning to Santos, around 2008, and reuniting with childhood friend Geraldo Moura, a drummer, they started the Sonorvs project to record their own songs in the studio, together with other guest musicians.

The name Terrakios ended up being the one that best fit the spirit of the work, being from 2020 onwards the one adopted for the group when performing and for the dissemination of the recorded authorial phonograms, now re-published in 2 finished albums (Sonorvs and Rock Paulera). In continuity, the composition work derived from the two Transistor (Colorido and Transparente) in 2024.