Some free, legal methods to stream music online include Google Play Music and Spotify. Both services allow users to listen to large selections of music in a variety of genres.
Google Play Music is a comprehensive streaming service that offers a range of unconventional features, including the ability for users to match MP3s on their computers to higher quality online versions. The service’s collection of 30 million songs also includes curated playlists and customized recommendations.
Spotify is another comprehensive online streaming service that offers users access to more than 20 million songs. Users can search for tracks, create playlists and browse curated collections of music based on different themes and moods. The service does require free users to listen to brief commercial interruptions after every few songs.