Estival Jazz Lugano, Lugano, Switzerland. Estival Jazz Lugano is an annual, open-air music festival that takes place over five days in the picturesque city of Lugano, Switzerland. Since 1979, this musical Mecca has been a must-attend event for all jazz and world music fans worldwide. In 1985, American vocal virtuoso Bobby McFerrin took the stage solo at Estival Jazz Lugano. The one-man musical force stunned the audience with his unique vocal percussion as he delved into the crowd for this quirky and charming act.