Wiktionary
vb. (context idiomatic intransitive English) to unite, to come together
WordNet
v. form a group or unite; "The groups banded together" [syn: confederate]
Wikipedia
Band Together was a musical concert put on for the people of Canterbury, New Zealand as a response to the 2010 Canterbury earthquake which had occurred a month earlier. It was held on 23 October 2010 at Christchurch's Hagley Park.
Organised by Opshop frontman Jason Kerrison and New Zealand music personality Paul Ellis, over 31 different acts performed on two stages erected in the city's North Hagley Park, many of whom had been raised in the region and wanted to give back to their hometown.
With appearances by Christchurch mayor Bob Parker, the Prime Minister of New Zealand, John Key. and a number of media personalities including Hilary Barry, Jason Gunn, Simon Barnett, it was broadcast live across New Zealand from midday through to 8pm on TV3.
Usage examples of "band together".
Mostly because of the way the show's continuing characters, both good and bad, band together in order to destroy the scary aliens hiding in the Force Corridor.