Last summer, tens of thousands of music fans streamed into Red Rocks Amphitheatre each week as promoters boasted of new records for the number of shows booked there — or anywhere in the state, for that matter. Those fans weren’t just coming from Colorado, but from all over the globe as the Front Range welcomed its annual crush of jam-band followers, dance-music diehards and summer vacationers. Meanwhile, locals flocked to major bluegrass, indie-rock, country and jazz festivals across the state as nationally acclaimed venues such as Mission Ballroom debuted in Denver, quickly outperforming attendance and booking projections. That’s all gone, of course, paralyzed by the pandemic and its government-mandated shutdowns that fell like wet concrete in mid-March. “I built my life around shows,” said Esmé Patterson, a Denver solo artist and scene veteran who formerly sang with the indie-folk group Paper Bird.