YouTube will increase the number of ads that some users see between music videos, part of a strategy to convince more of its billion-plus viewers to pay for a forthcoming subscription music service from the Google-owned video site.

People who treat YouTube like a music service, those passively listening for long periods of time, will encounter more ads, according to Lyor Cohen

Bloomberg

Google really needs to up their music game they are in last place and their service is great. YouTube Red and Google Music is a bargain but it’s not catching on even Pandora is seeing growth but Google just can’t seem to gain ground in music its never really caught on like others yet its a great service.