You will love the Detroit International Jazz Festival which is also well known as the Detroit Jazz Festival- the jazz music festival held each year over Labor Day Weekend at Hart Plaza and Campus Martius Park in Detroit, Michigan, U.S along with the promptcharters.com
You will come to know that this has the unique fame of being the largest free jazz festival in the World. You might be knowing that till 2000, the fest was known as the Montreux-Detroit Jazz Festival.
However, the fest again changed names in 2005, becoming the Detroit International Jazz Festival after Ford Motor Company removed its sponsorship. In January 2006, Gretchen Valade, Chairman of Mack Avenue Records founded the Detroit International Jazz Festival Foundation, which took over production and management of the festival.
Notable past performers in the fest include Dave Brubeck, Mulgrew Miller, The Manhattan Transfer, Paquito d’Rivera, Dave Holland, Regina Carter, Take 6, and Tower of Power.
https://en.wikipedia.org/wiki/Detroit_International_Jazz_Festival