Complete the indicated chapter in Story mode to unlock the corresponding challenge.

The Cavern '63: Chapter 1.
The Ed Sullivan Show '64: Chapter2.
Shea Stadium '65: Chapter 3.
Budokan '66: Chapter 4.
Abbey Road '66-'67: Chapter 5.
Abbey Road '67-'68: Chapter 6.
Abbey Road '68-'69: Chapter 7.
Apple Corps Rooftop: Chapter 8.