my quartet is interested in playing Canon in D, but as you can see, there isnt an arrangement for our instrumentation. one of the clarinet player also plays contrabass, but if she couldnt play contrabass for some reason, i think the horn would be the bass....anyway. im wondering if a) anyone knows where i can find an arrangement of this peice to look off of and rearrange, and b)help with voicings

You can find a piano score at any music shop, and I could help you with the arranging if you have questions.