Few people look to outdoor summer concerts for their adventurous-music fixes, and it’s especially surprising to see 79-year-old jazz legend Herbie Hancock with rising fusion saxophonist Kamasi Washington at the 5,000-capacity Marymoor Park, a Redmond venue that usually skews to more mainstream and innocuous sounds. This pairing spotlights jazz’s storied recent past and its resurgent present, and should provide exceptional sonic fireworks, with Washington on the ascendant and the nearly octogenarian Hancock showing only minor signs of decline. Think of it as an interesting, intergenerational clash—that of a young gun vitally reviving some of jazz's most powerful tropes and an eclectic legend flaunting a stunning panoply of game-changing styles. by Dave Segal