Boston Calllng music festval was started in 2013 that has been lining up a good mixture of well known acts to relative newcomers and everyone in between. It focuses on all major popular forms of music including rock, pop, hip-hop, and country. There are usually a good number of indie artists and alternative music that is given a plafform in the festival. It takes place across multiple stages in an open air location, and across three days in the weekend, starting on a Friday . It usually takes place towards the end of May, but in the first few years, it was on a twice a year schedule in May and September. Originally it was held at the City Hall Plaza in Boston, but since then, has moved to the Harvard Athletic Complex in Allston, MA.