Hear a slice of true blue American music June 30 at Green Fire Bookshop with singer/songwriter Bob Wilders. Blues, country Western and folk music are what Wilders plays--"all the stuff I grew up listening to," he says. He will perform original material, backed up with a bassist and a percussionist. Wilders, who came to Tucson from Hawaii, has been playing acoustic guitar since the late '60s. He began songwriting around the same time to complement his guitar work. Wilders first started performing his own compositions for the public after coming to Tucson, including being on the cable access music show Harrigan's After Hours. He also has performed at the Tucson Folk Festival. In his experience, Tucson has a stronger music scene compared to Hawaii, he says. Wilders will be one of the last performances at Green Fire, which is closing down in early July to change into a local music venue run under the same ownership. The bookshop has been a local resource for Southwestern and nature books. Last year, Wilders released his second CD, Best of an Old Friend. It is available for purchase at www.cdbaby.com, as is his eponymous debut CD, released in 2002. Both CDs encompass the range of genres he plays, swinging from country ballads and blues songs to up-tempo folk music. As an aside, Wilders also holds a third-degree black belt in Akido marital arts. This show is free. Following the gig at Green Fire, Wilders will be playing the next day at the Epic Café, 745 N. Fourth Ave., from 8 to 10 p.m. --M.W.