What happens when the experience of listening to music and that of reading about music become enmeshed? Critical Mass, a Spotify-like user interface for music streaming and music criticism, delivers users a possibly-not-so-healthy dose of music criticism in concert with a music streaming service. Record covers generated by aggregated review scores, in-app review swarms, and adjective word-clouds fuse the music listening experience with the taste-informing music-criticism experience. As you listen, you’re fed critics’ scores, review adjectives, selections of reviews, and even Critic bios.