All of the tracks on Collection were included in the 2001 six-CD album Odyssey: Solo Works.

In a review for AllMusic, Brian Olewnick wrote: "Collection serves as a fine, stark opportunity to hear the ideas of this under-recorded trumpet master... Dixon has a very painterly approach, and one can easily imagine these studies being drawn in space, their graceful lines reverberating in the air.

His normal tone is mellow to the point of sounding like a flügelhorn, though he's quite capable of taking it to high and relatively abrasive extremes.

More often... there's a sense of solitary, thoughtful melancholy that has more than a touch of Miles Davis... this is a good chance to hear a fascinating trumpeter displaying his ideas nakedly for the listener.

Remarkably few come across merely as technical exercises, even when that is the presumed intention, and it's to Dixon's eternal credit that every piece... seems to have its own logic and purpose... it isn't an easy listen... but it's hugely satisfying.