If you think arabesque is too easy than wow...It's really not easy to write a piece that's harder than arabesque but still sound so slow and soothing, you know.
Traumerei is from 'Kinderszenen' by Schumann, which is a set of 13 pieces, so why not learn one or two of the others to play alongside it?I love Schumann :-)
I understand what you mean when you say you want that ceetain piece. Heres a few more, claire de lune debussy, ...///...Stravinsky : 3 movements from Petrushka