Musicians who are related to each other by band membership.
Despite never performing in the same Rolling Stones lineup, Mick Taylor and Ron Wood are band-in-laws.
by Cutters79 September 2, 2011
Get the Band-in-law mug.
If the a collegiate marching band plays a Nicki Minaj song, according to Martial Band Law, no other collegiate marching band is allowed to play an arrangement of that same Nicki Minaj song.
Band Guy #1: Yo have you heard Hey Mama by David Guetta ft. Nicki Minaj? We should totally make that into a stands tune.
Band Guy #2: Dude we can't do that, Temple Diamond Band plays it. Martial Band Law forbids us.
by FullyAlive September 5, 2015
Get the Martial Band Law mug.