I agree with others on the list.It is best to use an older piano. Watch out for tape residue as well as fingers on the strings.I have had people put tape on dampers so they know what strings to pluck.Some types of tape leave a gooey mess.Suggest they cut up "post it" notes,or maybe bits of masking tape.I had one weirdo actually put bits of white hospital tape wrapped around the bass and treble strings.This same person also marked the bass strings with purple chalk.What a mess.After that we no longer rent our concert pianos for new "music"performances. Robin Olson RPT Jordan Kitts Music Wash DC
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