Organ swell

(Mus.) a certain number of pipes inclosed in a box, the uncovering of which by means of a pedal produces increased sound.

See also: Swell

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
This is seriously stripped-down stuff, a gruffly warm vocal backed mainly by percussive acoustic guitar, with just the odd Hammond organ swell and bare bones band backing.
The organ swells, you are surrounded by singers--adults and children alike--and you are marching.
The occasional tinkle of tuned percussion and organ swells reinforce the melodic drive, but the crowning glory comes with some absolutely heart-stopping unselfconscious vocal harmonies which lift the not unmemorable choruses into the ether.
But fans expecting more fat bass hooks and churchy organ swells will be surprised by this ambitious album of jazz improvisation that's far too cerebral for any serious booty shaking.
As the organ swells and voices are raised in song, the hands of adults and children alike dance through a series of actions that tell the story in a special kind of sign language.