Festival Mixtur welcomes any artist who incorporates sound exploration into his work. This openness is expressed through an international call, which determines a very important part of the program to come. The model of the Mixtur Open Call has established itself as one way to publicize projects around the world, of high artistic level, with a total of 674 applications received for 2017 and the selection of 9 proposals, which are added to the 120 selected from its beginning in 2012.