Every month, we compile our favorite new songs, both celebrated and slept-on, into a huge SoundCloud playlist. April's collaboration game was strong: Tory Lanez linked up with the WEDIDIT crew on "In For It"; Kali Uchis added her infectious vocals to the chorus of Tyler, The Creator's "Yellow"; Towkio's new track featured Ft. Chance The Rapper, Lido, and Eryn Allen Kane; and Kanye West popped up on Vic Mensa's new song, "U Mad." We also heard some searing new hip-hop from Future, A$AP Rocky, and Skepta, along with some heartfelt gems from Alessia, Kehlani, and recent Gen F subjects Girlpool. Stream the best of April 2015 below.