Looking for the week’s best new music? Check out our Songs You Need to Know playlist Welcome to our weekly rundown of the best new music — featuring big singles, key tracks from our favorite albums, and more. This week, Charli XCX ditches the dancefloor on a fuzzy rock song, J Balvin and Ryan Castro make their case for song of the summer with an aerobic track, and Little Simz spits atop a trap beat, once again solidifying her rap icon status. Plus, new tunes from Muna, Broken Social Scene, Kelela, Father John Misty, and Madison Beer. Charli XCX, “ Rock Music ” ( YouTube ) J Balvin and Ryan Castro , “Melo” ( YouTube ) Little Simz, “That’s a No No” ( YouTube ) MUNA, “Eastside Girls” ( YouTube ) Broken Social Scene , “Only the Good I Keep” ( YouTube) Kelela, “Linknb” ( YouTube ) Father John Misty, “The Payoff” ( YouTube ) Linda Perry , “Feathers in a Storm”  ( YouTube ) Madison Beer, “Lovergirl” ( YouTube ) Iceage, “The Weak” ( YouTube ) Kurt Vile, “Zoom 97” ( YouTube ) Flo, “Therapy at the Club” (…