"You have to really concentrate on piano or acting. You can't do both"

This quote by Alicia Witt is highlighting the value of focus and devotion when it concerns mastering a skill. She is recommending that it is not possible to be effective in two different locations at the very same time. To become a successful pianist or actor, one need to commit their time and energy to one particular location. This implies that a person must be willing to put in the hard work and practice needed to become competent in either piano or acting. It is not possible to become a specialist in both locations at the same time. Alicia Witt is suggesting that if one wants to achieve success in either field, they must want to put in the time and effort to end up being an expert in one area.