Abstract: A content server receives artist messages from client devices of artists, each artist message including content created using the client device of the respective artist. The content server receives from a client device of a listener a request for media items, the request including a seed value. The content server provides media items selected based on the seed value to the client device of the listener. The content server identifies a subset of the artist messages as eligible artist messages for the listener based on the media items provided to the client device of the listener. The content server scores the eligible artist messages based on a relevance of the message to a listener, and selects an eligible artist messages based on the scores. The content server provides the selected artist message to the listener.