Since 1977, Estival is a summer jazz festival in Switzerland, Lugano. Estival offers a thrilling and particularly surprising line-up that explores the rich world of contemporary music whilst promoting the understanding of different cultures, tolerance, and co-existence. The Crusaders, an American jazz fusion group that was popular in the '70s employed a two-manned front-line horn section. The group’s sound was rooted in hard bop, with an emphasis on R&B and soul. Their performance at Estival is beyond soulful and an amazing show to watch.