Actually, Xicheng and Back Street are not considered light music. If you want to listen to real light music, I strongly recommend Bandari and Secret Garden (band). But if you like West City and Back Street, there are a few songs: my love, i lay my love on you, seasons in the son, you raise me up... as long as you love me, everybody, larger than life. .....

P.S I personally also like Westlife and Backstreet Boys