Magna march

Magna Marches are a type of music/performance from the Generation 1 continuity family.

Magna Marches are a type of Cybertronian music. What are Magna Marches, you ask? Not much is known about them, aside from that they're "a kind of harmolodic form", and that Autobot communications officer and music aficionado Blaster loved them (and because they are contrasted with D.C hardcore, one can assume they are a bit less "rough").

Whether magna marches utilize a magna pulse or have anything to do with Magna Stampede has yet to be determined. And the world may never know.

What we do know is that "magna march" translates into "jazz".

Fiction

IDW Generation 1 continuity

Jazz discovered he enjoyed magna marches while living in his native Staniz, and decided to claim that he took his name from them. What It's Really Like