A lively downtown affair brought Bluegrass to Mass as the Granada hosted a free outdoor concert that drew thousands of revelers to the streets. Live On Mass kicked off its second installment (the first being the Wailers last week) of the annual series with Split Lip Rayfield, Billy Strings, and Opal Agafia and the Sweet Nothings. Despite sweltering temps and humidity that only got thicker as the night went on, party-goers found reason to celebrate and dance to the festive performances.