Bill Doss, a founding member of indie rock group the Olivia Tremor Control, has died at the age of 43 of as-yet-unannounced causes.

After reports surfaced early Tuesday (July 31) of Doss' death, the official OTC web site confirmed the sad news. "We are devastated by the loss of our brother Bill Doss. We are at a loss for words," reads the message.

The Dubach-Louisiana-native formed the Olivia Tremor Control in the early 90s alongside singer-songwriter Will Cullen Hart and Jeff Mangum, the latter of whom would later become an indie-rock icon as the leader of Neutral Milk Hotel.

The Olivia Tremor Control (which was born out of another project, Synthetic Flying Machine) was a founding part of the Elephant 6 Recording Company, an influential independent collective of musicians that also included the Apples in Stereo, Neutral Milk Hotel, Beulah and Elf Power. The label's bands generally had a penchant for both psychedelic sounds and the Beatles.

After relocating to Athens, Ga., Doss and Hart guided the OTC to critical success in the mid-90s, as their 1996 disc, Music From the Unrealized Film Script, Dusk at Cubist Castle, became their best-selling work with 30,000 copies sold, according to Nielsen SoundScan.

The band went on hiatus in 1999, with Doss reviving an early project, The Sunshine Fix, as well as guesting on albums by the Apples in Stereo and Circulatory System.

The Olivia Tremor Control has sporadically reunited over the past five years, and released a three-song suite last fall. Doss and the rest of the OTC performed at the Pitchfork Music Festival in Chicago earlier this month.