15 minutes pitch raise

[Michel Lachance]

>hi
>
> how big a pitch in 15 minutes,  a tone,  or at least a semi-tone?
>
>just curious
>
>Barrie
>

It usually takes me less time to pitch raise a very low piano than another
one that is only about 15 cents flat as I don't have to use any mutes.

Michel Lachance, RPT