Given the six-year difference between them, Barbara Gruska and her kid brother Ethan didn’t really get along when they were young. But that all changed with adulthood. Today, these scions of composer Jay Gruska (and grandkids of film scorer John Williams) make Fleetwood Mac-peppy music together as the Belle Brigade. Their self-titled, Matthew Wilder-coproduced debut is packed with finger-popping ditties such as “Sweet Louise” and “Belt of Orion.” The duo, which landed the track “I Didn’t Mean It” on the new soundtrack for “The Twilight Saga: Breaking Dawn Part 1,” plays The City on Tuesday.
Every band wants to get a song into “Twilight.” How did you two do it?
Ethan: Well, we actually recorded “I Didn’t Mean It” while we were recording the rest of our record, because we wrote it at the same time as the other songs. But it was turning out to be the odd man out from that batch of songs, so we decided not to put it on the record and to try and place it somewhere. Since [“Twilight” music overseer] Alexandra Patsavas was in our loop, we gave it to her to see if she could put it anywhere.
Barbara: Actually, the last song on our record is called “Fasten You to Me,” and before our record came out, Alexandra originally wanted to use that one for “Twilight.” But that would mean that we wouldn’t have been able to put it on our album, so we said no to that. So she said, “Well, do you have anything else you’d be willing to put out there?” We were really lucky.
Barbara was a professional drummer behind Inara George and Jenny Lewis. Why choose percussion?
Barbara: I played violin for a couple of years, and I sucked. So at 9, I put a drum set together in my room out of random things around the house. I hung a can lid by a shoe string on my pull-up bar in the bathroom — stuff like that. I begged my dad for a real drum set, and he said, “If this keeps up after a year, I’ll buy you one.” And it did, so for my 10th birthday, I got a kit.
Now you’re in the spotlight, singing and strumming guitar alongside Ethan. How scary is that?
Barbara: It was a big change to come out from behind the drums, for sure. So roping Ethan into the Belle Brigade was the best decision I ever made — from the moment he graduated high school, I was like, “Let’s go!” I really couldn’t do any of this without him.
IF YOU GO
Opening for Dawes and Blitzen Trapper
Where: The Fillmore, 1805 Geary Blvd., San Francisco
When: 8 p.m. Tuesday
Contact: (415) 346-6000, www.livenation.com