(Music Pro Guide Books & DVDs). As a musician, one of the challenges you struggle with is how to keep track of all the receipts for road-related expenses and earnings. The idea of having to face the mountain of receipts at tax time is terrifying. There has to be a better way. There is. Enter all receipts in the Musician's Money Book (MMB) log envelope gas, food, hotels, equipment rentals, and venue contracts. Then simply fill in the "logbook" printed on each MMB log envelope, seal it, and put it away in your Musician's Money Book for tax time. It's a great way to look back and see where the money went, or to estimate expenses for your next tour or next year and your accountant will love you.