Bach's Hidden Melodies A new CD called Morimurfeatures music by J.S. Bach, performed by violinist Christoph Poppen and the voices of the Hilliard Ensemble. The Chaconne from Bach's Partita in D is performed with solo violin, along with various church chorales. Then the Chaconne is performed again, this time with the singers bringing out secret melodies. Critic Tom Manoff says hearing the hidden layers beneath the music made him appreciate the genius of Bach even more.