Interesting. Never thought much about what's in my collection, so no time like the present. Let's see. Math was never my bag, either. Howzis?
Four cups trad, mostly American but including a generous handful of English/Scotish/Irish. Another cup of turn-of-the-century (the last turn) schmaltz and a level tablespoon of esoteric "stuff." A heaping teaspoon of fiddle tunes and dance music from the South and New England. One pinch of songs I've recorded. Mixed together you get a lot of noise, so best to hear them one at a time.
I have a large number of vinyl albums some of which I've turned into cassette tapes, including a lot of years of Christmas presents from Folk-Legacy. :-) Many more tapes which is what plays in my car--fiddle tunes are better than gasoline for making the car go. CDs which I can hold in one hand.
That about does it.
Joan