New York City’s only all-female Mariachi band headlines a Latin music festival that will take place on consecutive Sundays in Sunnyside. On June 2, the always colorful, nine-piece Flor de Toloache (above) will rock Thomson Hill Park to open the 19th annual Al Aire Libre concert series by Thalia Spanish Theatre. On June 9, zarzuelas (Spanish operettas) will fill the air thanks to arias and duets by soprano Ilya Martinez and baritone Rafael Lebron. Details: June 2 & 9, 1 pm. Thomson Hill Park, Greenpoint Avenue off 42nd Street, Free.