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 Mel Lewis Orchestra was arguably the most influential big band since the swing era. They were an unusual band, creating new styles, succeeding in an era when big bands were unpopular and remaining integrated during racially tense periods.