Brooklyn composer Ellis Ludwig-Leone formed San Fermin for a one-off performance of his sheet music compositions in 2012.
However, that music would live on past that show: The band recorded and released those songs in 2013 on San Fermin’s debut self-titled album.
Ludwig-Leone then solidified San Fermin as an eight-piece touring band with two lead vocalists and a blend of rock and orchestral instruments.
Last year San Fermin released its second studio album, "Jackrabbit," which came to life as Ludwig-Leone and his band adapted to life as a touring band and became a close-knit musical family.
San Fermin stopped by Open Air to perform three songs before a headlining show at Boulder's Fox Theatre. Ludwig-Leone spoke about creating "Jackrabbit" on the road, writing music for two different vocalists and his recent musical collaboration with a 5-year-old boy.
San Fermin will perform in July this year's Underground Music Showcase in Denver.
Stream the session above and read interview highlights below.
Ludwig-Leone on the writing process for "Jackrabbit":
"When I was writing the first record, I didn't even know (San Fermin) would be a band. There was 22 musicians. ... Culling it down to an eight-person group that plays rock festivals, rock concerts -- it really helps form an identity for the group.
"Now when I'm writing, I think of these people rather than the abstract feeling of the first record."
On adjusting to life as a touring band:
"The most unexpected part is how close of a family this thing has become. It's definitely become the most rewarding part to share this music with these seven other people and make it feel like it's our thing."
- "No Devil"