Known for their politically charged amalgam of reggae, rock, hip-hop, funk, and EDM, Spearhead is the long-running musical outlet of California-based singer/songwriter Michael Franti. Since debuting Spearhead in 1994, Franti has guided the band in tone from the more funk- and rap-oriented sound of albums like 1997's Chocolate Supa Highway and 2001's acclaimed Stay Human to the laid-back melodicism of later releases like 2010's The Sound of Sunshine and 2016's SoulRocker. While early albums were credited solely to Spearhead, the name eventually came to be identified as Franti's...