"What a Wonderful World" is a song by Louis Armstrong that has been arranged for piano. There are several piano versions of the song available on YouTube, including solo piano versions and tutorials for beginners. Some of these videos also provide sheet music for the song. Here are some examples of the available versions:

• "What a Wonderful World" - Louis Armstrong | Piano Version
• "What a Wonderful World" (Piano) // Armstrong
• "What A Wonderful World" - Loius Armstrong | BEGINNER PIANO TUTORIAL + SHEET MUSIC by Betacustic
• "Louis Armstrong - What A Wonderful World | EASY Piano Tutorial"
• "What A Wonderful World" - Piano
• "Louis Armstrong - What A Wonderful World | Piano Cover by Paul Hankinson"

Some of these versions are more advanced than others, so its important to choose one that matches your skill level. Additionally, some of the videos provide sheet music for the song, which can be helpful if you want to learn to play it on the piano.