Awhile ago I hired a sound engineer to come and install a bunch of equipment at my church, which included amplifiers, a mixer, microphones, and more. At the time we were using an old upright piano and he ended up recommending the Shure Beta 91A half-cardioid condenser microphone for the piano.
It's a mike that can lay flat, but also has two holes on the underside so it can be mounted on protrusions. We ended up sticking in a nail on the inside of the piano in order to mount it, and since it was an old/crappy piano, this was fine.
However, now we've been gifted a nice grand piano and I'll need to mike that as well. I was hoping the simply re-use the existing microphone, if possible. However I'm unsure where or how to mount it in a grand piano, and am definitely unwilling to put any nails in this time. Does anyone here have experience with miking grand pianos? Is it possible to continue using the same model I listed above in a grand piano? (If so, how? / where does it go?) Or is there another mike I should purchase?