The client is solely responsible for piano tuning. It’s frequently moved and treated, both of which knock the C3 out of tune. We’ll gladly have you in a few days before your session to check the tuning. If the piano is central to your project, we strongly encourage you to book the tuner for the day of your session. He has keys, so he can start well before you load in. Try to book him in advance.
Piano tuners: Steve Benjamins, 925 284 3077
Or: Mark Skowronek 415 864 4688
They are both great and reliable.