Johann or Johannes Bach (26 November 1604, Erfurt – buried 13 May 1673, Erfurt) was a German composer and musician of the Baroque. He was the father of the so-called "Erfurt line" of Bach family musicians. Johannes was the eldest son of Johannes Hans Bach and the brother of Christoph Bach and Heinrich Bach. All three were composers. He spent seven years studying under Johann Christoph Hoffmann, a stadtpfeifer in Suhl. From 1634 he served as organist at St. Johannis church in Schweinfurt, and was later organist at Suhl.