Please consider taking Metro or carpooling. Parking in the Mansion lot is on a space available basis - overflow goes to the Grosvenor-Strathmore Metro garage which has a $5.20 fee on weekdays.
Strathmore is located immediately adjacent to the Grosvenor-Strathmore Metro station, on the Red Line. Follow the walkway out of the metro station to the left entrance of the Metro Garage. Take the stairs or elevators to the 4th level and walk across the sky bridge into the Music Center’s main entrance.