It’s soothing. Let me recommend a few songs. Can they be in Cantonese? "Zhong Wuyan" and "Wedding Invitation Street" by Xie Anqi

"Gone with the Wind" and "Once Upon a Time" by Liu Zhu

"Going Home by Myself" by Guo Shuyao

Xue Kaiqi "Amnesia Alone"

Soda Green "Believe" "Little Love Song" "Incomparable Beauty" "Go Home Early"

Xianzi "Innocence" "The Third Person of the Third Party"

Guo Jing's "Dowry", "Chat", "Three People", "Singing in the Trees", "Next Dawn", "I Don't Want to Forget You"

Shenmu and Hitomi's "Grass Ring"

Liang Jingru "Little Hand Holding Big Hand" "Adoration" "Love Song" "No If"

Zhang Jie "This is Love"

Taylor swift "love story"

Justin bieber "baby"

Beyonce "Halo"

A few more songs:

Lin Fan "Close to you" " Winter"

Feng Xiyu's "A little love"

The above are all pop music, I don't know many piano songs. "Sad Fairy Tale" "Protective Color" piano version "木々の声と日々の" "ざわめき" "Only Human" Piano Version ~ One Liter of Tears "If you were by my side" "Never Again All The Life" "My Joy" Piano Version

That's all I know, Hope this helps!