To this triple output he added three orchestral suites in later life, of which the third has a remarkable history. The origin can be found in Capri, where Bruch had witnessed a procession in which a tuba played a tune that "could very well be the basis of a funeral march", and would be the basis of this suite, finished in 1909. The Sutro sisters, however, had asked Bruch for a concerto specifically for them, which he produced by arranging this suite into a double piano concerto, but only to be played within the Americas and not beyond. The Concerto in A-flat minor for Two Pianos and Orchestra, Op. 88a, was finished in 1912 for the American duo Sutro Pianists Rose and Ottilie Sutro, but was never played in the original version. They performed the work only twice, in two different versions of their own. The score was withdrawn in 1917 and rediscovered only after Ottilie Sutro's death in 1970. The sisters also played a major part in the fate of the manuscript of the Violin Concerto No. 1. Bruch sent it to them to be sold in the United States, but they kept it and sold it for profit themselves.