Cardcaptor Sakura: Clear Card Arc season 1 episode 19
Episode title: Sakura and Akiho's Lullaby
Sakura is finally about to go and read to children with Yukito, and she invites Akiho, Syaoran, and Tomoyo to come along. Sakura's enthusiasm convinces Akiho to join her for the reading, while Syaoran agrees to contribute a piano accompaniment.
