The notion that a laptop is a musical instrument is silly. This generation is so obsessed with being edgy they'll try to turn anything into a "musical instrument".
Composing for a pianola is like composing for an ipod.Stravinsky wrote an original composition for it. It was later transcribed for orchestra as one of the "Four Etudes".
Composed at and played at an acoustic piano, 'inputted' if you will by the same means.Composing for a pianola is like composing for an ipod.
...had he composed it on a pianola. Sure. No problem...bit lazy though. Not sure how much credit Igor should deserve.
If you consider a synthesizer an 'instrument' as we all do the first synthesizer, the organ, then maybe yes, the computer / iPod is 'an instrument.' I guess the semantic argument would be a little bit about whether the medium is the message, or merely the messenger boy.