"Bird Poem" "Wind Corridor" There is a song in Kugou. The interlude in "Cardcaptor Sakura" is very nice. Just search for "Piano Song Cardcaptor Sakura"

Naruto Guitar version of "Hakuei" from Ninja, Naruto's "Aikaze", Naruto's "May Rain", Naruto's "Fairy Tail"

Qin Shimingyue's "Qinshi Mingyue Pure Music", "Summer Shadow", you can do the above. Searched by name on Kugou, they are pure music that I prefer, tranquility