How do you get audition mode on Wii for Rock Band 2?

To access audition mode in Rock Band 2 on the Wii, navigate to the main menu and select "Quick Play." From there, choose "Audition" to enter the mode where players can try out songs individually. This mode allows players to practice and showcase their skills before joining a full band session. Make sure you've unlocked the songs you want to audition for, as only available tracks will be accessible.