Detunized Rolfing Laid Back Vol 1
A really rotten upright piano, totally out of tune, with all the keys disappeared.
But the chassis was still complete and made such a fantastic reverb, it seemed to be everlasting. Slapping the lowest string it took almost three minutes until the sound had gone.
With Volume 1 you get the original piano sound picked up at two distances plus five other sound sets using different prepared piano techniques.