A pencil writing on some cardboard. Makes a good scratching sound for something like note taking or plain writing. It's semi-erratic with a couple pauses in between and i took different distances from the mic and angles with the pencil to try and get different sounds.
Simple type of riff with some flange and vibrato/noise. Low gain type of distortion. Sorta random chords type of playing which would probably work broken up into smaller sections. Gets nasty at the end.
Recording of a guitar string being played with an ebow. (an ebow is a magnetic device that causes a steel string to vibrate in its magnetic field. ) i believe this was recorded on a prs tremonti guitar.
A recording of several single notes on the ukelele. Noisy, not a totally clean recording either (some bleed from a c string that i didn't intend to touch). This sound was originally created for the coursera course "audio signal processing for music applications. " i recorded this sound myself with a zoom h2 microphone and a kala classical ukelele.
This is a harmonica sound played by suzuki olive c20 harmonica(g key),recorded by iphone and i converted it into wav. It's monophonic, sampling rate 44100, 16bits.