Masha and the Bear (2009)
S1E19 The Grand Piano Lesson
Title: The Majestic Piano Tutor Plot: While wandering through the woods, the bear stumbles upon a stunning black piano. Excited, he brings it back to his den, repairs it, and tunes it until it sounds perfect. Inspired by his newfound instrument, he starts composing music. Meanwhile, Masha dreams of becoming a renowned pianist and approaches the Bear, requesting his guidance in learning to play the piano.