If keeping the beat going were left up to anyone but the percussion, the heart beat of the Brass Band, the music would irrevocably, become a pulseless durge.
It's all very well saying that the basses are the engine room of the band, but the percussion just LET you think that.
In your defence basses, it requires a much greater physical effort to play your pipes than to hit a drum. Keep with us though, and you'll never be out of sync......(ahem)
We add invaluable colour to the mellifluous brass sounds. Infinitessimal sounds can be produced by hitting/scratching/shaking objects, and simply by writing specifically for these magical instruments, a composer/arranger can instantly capture the desired mood of his/her work - expressing the style of the music to follow in just a few seconds.
Percussive sounds can be made to blend or to overpower as required, neither of which cause that much trouble for the player to achieve.
Can anyone tell which way my vote is going?
Horns are alright though, I s'pose.