Hey-lo! I was wondering if piano sheet music can be played by another instrument besides the piano...? Heh...

Sure it can. Provided the instument is in the same key.

Harp, Positiv Organ, Reed Organ, Harmonium, Harpsichord, Keyboard synthesizer.

or arrange for orchestra

even for violin or cello solo

http://202.197.192.7/Software/100MP3/MP3_mhq.htm

Actually, the top line can be played by any treble clef instrument in the key of C. The bottom line can be played for any bass clef instrument in the key of C, as well, which is almost all of them... ^_^

If it's a simple melody, you can transpose it for anything. The problem arises when you run into chords and bass lines. At this point, you can move it to any other instrument capable of playing chords.