It'll be worth it though: Roxy by Proxy has been described by the Zappa Family Trust as "All Roxy, No Elsewhere: 76 minutes of never-before-released Frank Zappa master recordings from the Roxy Performances of 9 & 10 December 1973:

"Inca Roads," "Penguin in Bondage," "T'Mershi Duween," "Dog/Meat," "RDNZL," "Cheepnis & Dupree's Paradise," "King Kong," "Chunga's Revenge" and you know, that's not all. Yes, it is the same band as the Roxy part of Roxy & Elsewhere."

The set also includes a "voluminous booklet jacked with liner notes by the redoubtable Ms Ruth Underwood."