D Major would be wonderful, as it would be a good key for cello. Some great cello renditions on you tube(Song to the Moon: Hauser playing) is one.
Dana: Hi, Anonymous. Are you saying that there is ALREADY a D version available? Or just that it really sounds good on cello? It's so time-consuming to prepare a setting, especially with a long piece like this one, that I wouldn't attempt it if there are already versions out there.
Down In the Valley is an old-fashioned song with sweet lyrics and a strong melody. Resting around Middle C & using just 2 chords, it makes a fine duet or solo!
Short aria Nel cor with piano accompaniment in the keys of Eb, F, and G! This pretty little aria is perfect for students just venturing into classical music.