I want to help my friend with the promotion of his music. What ways of promotion are popular nowadays and will give success?

I want to help my friend with the promotion of his music. What ways of promotion are popular nowadays and will give success?

I just recently learned about this method of promotion which is described on this page https://promosoundgroup.net/collection/streaming-promotion/spotify-promotion/. There are several promotion options for different budgets. Yes, it is a paid way, but it works 100%. Suggest this option to your friend if he is interested in becoming a Spotify star.