An extraordinary first happens tonight when two of West Philly’s premiere orchestras of all-time perform on the same bill for the first time ever. Whether it’s been under the guidance of Sun Ra or Marshall Allen, the Sun Ra Arkestra has brought intergalactic freestyle jazz to an international level for several generations. And the tribal space musicians could easily be an inspiration for the musical community of Eastern European folk jazz masters known as West Philadelphia Orchestra. Although significantly different presentation wise, both communal groups of jazz virtuosos are kings of taking traditional music forms to whole new heights. So seeing both acts play under the same roof for the first time is going to be one truly momentous experience, especially when it’s FREE with suggested donation at the door! And who knows? The cosmos may align and such an extraordinary occasion may lead us to an epic ending jam session! The Rotunda, 4014 Walnut St., 8pm, FREE w/suggested donation, All Ages – Bill McThrill