Question: Were any other instruments besides a violin recovered as artifacts from the Titanic wreckage?
Answer: There are several on-line references to the recovery of musical instruments salvaged in a steamer trunk belonging to one Howard Irwin, in addition to some playing cards, a diary, and a bundle of letters from his girlfriend Pearl Shuttle, who had died of pneumonia one year earlier. It was first thought that Irwin, a musician and professional gambler, had boarded the ship under a false identity. There was no record of him being among the passengers, even though a ticket had been purchased for him. It turned out that he had stayed ashore but his trunk had been brought aboard the ship by his friend Henry Sutehall, who was among the victims of Titanic v. Iceberg. I have searched extensively (because you piqued my interest) for more detail regarding exactly what instruments were said to have been found, but I have uncovered no specifics.