Charles Michael Kittridge Thompson IV is an American singer, guitarist, and songwriter. He is the frontman of the alternative rock band Pixies, with whom he performs under the stage name Black Francis. Following the band's breakup in 1993, he embarked on a solo career under the name Frank Black. After releasing two albums with record label 4AD and one with American Recordings, he left the label and formed a new band, Frank Black and the Catholics. He re-adopted the name Black Francis in 2007.

Joseph Alberto Santiago is a Filipino-American guitarist and composer. Active since 1986, Santiago is best known as the co-founder and lead guitarist of the alternative rock band Pixies. After the band's breakup in 1993, Santiago produced musical scores for film and television documentaries, and he formed The Martinis with his ex-wife, Linda Mallari. He also contributed to albums by Charles Douglas and former Pixies band-mate Frank Black. Santiago resumed his role as the Pixies' lead guitarist when they reunited in 2004.