Alain Johannes Mociulski is a Chilean-American multi-instrumentalist and vocalist, whose primary instruments are guitar and bass. He is a founding member of several bands, including the alternative rock group Eleven, and has been involved with acts such as hard rock band Queens of the Stone Age, Them Crooked Vultures, PJ Harvey, Chris Cornell, Arctic Monkeys, Mark Lanegan and The Desert Sessions, both as a musician and as a producer.

Natalia Mikhailovna Schneiderman, known as Natasha Shneider, was a Latvian-born Russian-American musician and actress. She was most notably the keyboardist and vocalist in the band Eleven, along with her partner, bandmate Alain Johannes. Shneider contributed to tracks for Chris Cornell and Queens of the Stone Age, and together with Johannes toured with Cornell on his Euphoria Morning tour in 1999 and with Queens in 2005 on their Lullabies to Paralyze tour. She died of cancer in 2008.