Restaurateur Julian Wright says the Mill Avenue music scene had a heyday in the ‘90s, when Hayden Square Amphitheater would host national touring acts like Phish. Wright, who owns Pedal Haus on Mill Avenue, is reviving the intimate outdoor venue and Tempe’s music scene with a one-day music festival aptly named Hay Day Music Fest. The event will take place on Saturday, September 28 from 2 to 11:30 p.m. The lineup was handpicked by Wright,...