 Tchaikovsky's 1812 Overture also starts with a cello ensemble, with four cellos playing the top lines and two violas playing the bass lines.As a self-sufficient ensemble, its most famous repertoire is Villa-Lobos' first of his Bachianas Brasileiras for cello ensemble (the fifth is for soprano and 8 cellos).Other examples are Offenbach's cello duets, quartet, and sextet, Pärt's Fratres for eight cellos and Boulez' "Messagesquisse" for seven cellos, or even Villa-Lobos' rarely played "Fantasia Concertante" (1958) for 32 cellos.