Why Does All Jazz Sound The Same?

Squeaky squeak squeak, honk honk honk, ratta tap tap, bing bang bong, tinkle tinkle, rumble bum bum.  

God I love it!
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Of course it all sound's the same ... they all play the same twelve notes ... 🙄
There are many branches and styles within jazz.  It is beautiful, often soulfull music.  Many of the greatest popular artists are influenced by jazz - Steely Dan, Joni Mitchell, Anita Baker, just to name a few.  It is a wonderful original art form from America, that now has broad followings around the world.
Personally I love all Jazz, Blues, Rock, Country, Reggae, Classical, Indie, Punk and yes even some Rap.

Like what you like and do not put others down for their choices or proclivities.