This as yet untitled rough mix is made up of a few simple melodies recorded on my 1916 Raudenbush & Sons upright piano. Interspersed within the piece are a number of what I’m calling piano sound objects. I used a couple of different techniques to create these sounds.
To get some of the sound objects I tapped the strings with a variety of mallets. Another sound was created by rubbing a mallet along the string in a rhythmic pattern. I also created an interesting sound using a brush, intended for use on drums, to stroke the strings across the sound board.
The processing involved includes high quality reverberation, equalization, and compression, but I also took the liberty of applying pitch shifting a reverse in a few places. Although all of the sounds originate from the same acoustic piano, I would still call this an electronic piece because of the editing, treatments and processing used.
Untitled Piano Sound Objects
I came across this old late night session of sleepy Rhodes melodies and decided to render about fifty eight seconds of it. It was originally recorded on November 3, 2006 at about 12:53am. I love electronic timestamps. 
This spooky sound was created in Ableton Live using a variety of processing. The main device responsible is Pluggo’s Feedback Network. I ran a modulated synth pad into it, then removed all of the dry signal after automating several parameters. I re-sampled the results then pitched it all down two octaves being careful to filter out inaudible low frequencies. Finally, over the top I added a ping pong delay so the audio swirls around the stereo spectrum adding to the disturbing qualities of the sound. 
Absolutely nothing is distinguishable in these samples after all the processing that has been applied. My goal was to make a sequence of random samples sound as nasty as possible by applying down sampling, bit reduction, and distortion, then bring it back into something tolerable by applying some resonance filters and reverberation.