The Absynth Quartet was probably lucky enough to leave all their gear set up on The Jam's stage last night, as Tofu tells me that they're back this afternoon for a special all ages show at 1 p.m. Not sure if there's a cover for this show, but you can finally share with your kids the reason why you occasionally need babysitters for Saturday nights. Later this evening, Jo'burg-born — and now Colorado resident — musician Gregory Alan Isakov is at Humboldt Brews at 8 p.m. Songs that tell the story of travels, long roads, and penetrating landscapes, Gregory is joined by Sera Cahoone who will be opening up this $25 show. Around the same time, The Mateel in Redway hosts rapper E-40, who brings his "streetwise lyrical storytelling" with hints of humor to SoHum. This all-ages show gains support from fellow rapper Kool John. There will be Mexican-inspired fare for purchase and $40 will get you in for this show.