brass band

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A band composed of brass and sometimes percussion instruments.

from The Century Dictionary.

• noun A band or company of musical performers, all or most of whom play upon metal (chiefly brass) wind-instruments; a military band.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun music A group of musicians who play brass instruments (sometimes accompanied by percussion)

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a group of musicians playing only brass and percussion instruments