- twitter.com pianokeyguidePiano Keyboard Guide for beginner piano lessons, easy tutorials, covers and music theory.
- ok.ru Видео Crazy Frog - Axel F - Slow Easy Piano Tutorial - How To PlaySlow version. I highly recommend this piano course.
- vk.com wall-71524099_568298Piano and keyboard chords in all keys - charts www.piano-keyboard-guide.com.