I see that this post has not been answered in three years but others may also have this question.
There was a "White Star Line Music" list of selections included in "The Titanic Collection - Mementos of The Maiden Voyage" produced "From the archives of the Titanic Historical Society". This music list included 15 Overtures, 65 Selections, 18 Suites, Fantasias, etc. and 49 Waltzes.
There appear to be a few possible mistakes in the list. "The Quaker Girl" appears twice as No. 24 and No. 103 and "Alexanders Ragtime Band" is not in the list even though it is mentioned in some accounts of the sinking.