Spotify their favourite artists, as well as music, review, and concert recommendations based on listening history. Users can add all tracks to a "Collection" section of the app, rather than adding to a specific playlist. The features were announced by CEO Daniel Ek at a press conference, with Ek stating that a common user complaint about the service was that "Spotify is great when you know what music you want to listen to, but not when you don't", adding that "20,000" new songs got added to the service on a daily basis. "You're fighting with 20 million songs on Spotify", Ek
Slacker Future" in which James Tolkan's character Mr. Strickland chronically refers to Marty McFly, his father George McFly, Biff Tannen, and a group of teenage delinquents in "Part II" as "slackers". It gained subsequent exposure from the 1989 Superchunk single "Slack Motherfucker", and the 1990 film "Slacker". The television series "Rox" has been noted for its "depiction of the slacker lifestyle ... of the early '90s". "Slacker" became widely used in the 1990s to refer to a type of apathetic youth who were cynical and uninterested in political or social causes and as a stereotype for members of Generation X. Richard