Its a piano melody that i made then flipped backwards in audacity, has a nice whistling sound. Recorded using auxiliary audio cables connected to keyboard, so it is fairly low quality.
It's a repetition of 3 medium notes in an old and unadjusted piano in a tourism house in the camping montseny, near to barcelona. Sound take with compact camera olympus stylus 820.
Cool sound produced by pitch shifting down with time stretch x4 and reversing a section from the end of the third movement of beethoven's symphony #14.