Homotonality is even encountered in some Baroque concertos: examples include Vivaldi's Cello Concertos RV401 (n.d.) all movements in C minor and RV416 (n.d.) all movements in G minor, and Jean-Marie Leclair's Violin Concerto Op.7
While J.S. Bach in his instrumental and orchestral suites would often place every movement in the same key (see, for example, the solo cello Suites, BWV 1007-1012 or the equally homotonal A minor solo flute partita BWV 1013), in a work like his St Matthew Passion he felt able to 'progress' from an E minor start to an ending in C minor, and his Mass in B minor actually ends in D major.