I presume that you have either a pretty big cat or a very small banjo. As to the "catgut "strings - these originated in Wales a land of song and "sheep Sh***gers" The history of those animals from the Himalayas reminds me of a tale I was told at my mothers knee when I was about 25. She claimed to have got her first job in 1914 in a factory in Liverpool where they used steel wool to knit kettles, and produced steel guitars as a side line.. I have tried it but the difficult bit is finding a volunteer to hold the skein around their wrists while the yarn is wound into a ball suitable for knitting. The factory down the road used to manufacture ear rings for Indians and was known locally as "The E(I)ngineering works.

Have fun and keep them coming.