Al uses Neumann M149 about a foot and a half over the hammers inside the piano.
One mic to capture the high side and another to capture the low register. Each mic is 8 inches from either end of the piano.
Note: Place the mics in cardioid not omni.
For upright piano, Al uses RCA 77's and mics the back of the piano. He likes the sound of the soundboard and it allows for a lot of separation.
SOURCE
