Frank Schültge is a German author, musician, and producer working under the pseudonym F. S. Blumm.

Schültge received classical guitar lessons in his youth, but developed a growing interest in noise music.

He played in various groups that were influenced by the sound of Sonic Youth, Melvins, and later Gastr Del Sol.

[2] In 2007, he began work with Ella Blixt as the duo Bobby & Blumm, producing the minimalist folk-influenced albums Everybody Loves ... in 2008, and A Little Big in 2010.

He also worked with Jana Plewa in 2008 as the group The Kat Cosm, along with guest musicians Sven Kacirek and Harald Ziegler, releasing the album Swaying Boldly Afar.