#bands #free concert series #Hollerado #music #Tamarack Race WeekendFree concert series is back at Tamarack Ottawa Race Weekend_ (press release) _ Ottawa's largest tourism event, the Tamarack Ottawa Race Weekend, is pleased to announce the return of its Celebration concert series with Governor General Arts award recipient Michel Pagliaro headlining Friday, May 27 , and Juno-nominated Hollerado headlining Saturday, May 28 . ...