The Liar and His Lover (2013) on Netflix

Plot summary

Aki Ogasawara writes music for Crude Play, a rock band, and puts the name Soichiro on the work rather than his own. He once played bass in that group alongside three childhood friends and left just before its major debut, and he keeps out of the public eye. Riko Koeda is 16, a high school student with a gifted voice. She sings in Mush & Co., an amateur band formed with Yuichi Kimijima and Sota Yamazaki, two childhood friends. She meets Aki and falls for him, and she likes to hear him hum. Her father runs a shop selling fruit and vegetables. Aki begins to date her, and a producer scouts her.