by ph00tbag » 27 Jun 2012 22:13
Honestly, I treat piano similarly to how I treat voice, just without the de-essing and without the limiting, since piano has a more manageable dynamic range. Basically, make it one of the loudest things in your mix. Everything else can be compressed, and EQ'd, and messed around with a lot, but piano has a big frequency range, so EQ isn't as helpful, and it's dynamic range interacts with its intonation, so compressing it makes it sound bad.
I'd say cut everything below the lowest low, and only cut higher frequencies if the piano is actively crowding out something else in the mix. Like Versilaryan said, only compress if it's absolutely necessary. Finally, have the piano peak somewhere between -6 and -7 dB, depending on what style of music you're making.