Drink can dealers often purchase aluminium cans in bulk, even when deposits are not offered. Aluminium is one of the most cost-effective materials to recycle. When recycled without other metals being mixed in, the can–lid combination is perfect for producing new stock for the main part of the can—the loss of magnesium during melting is made up for by the high magnesium content of the lid. Also, reducing ores such as bauxite into aluminium requires large amounts of electricity, making recycling cheaper than producing new metal. Aluminium cans are coated internally to protect the aluminium from oxidizing. Despite this coating, trace amounts
You Are What You Is You Is", "Tinsel Town Rebellion" and two series of live albums, "Shut Up 'n Play Yer Guitar" and "You Can't Do That On Stage Anymore". Zappa had performed most of the material from "You Are What You Is" on a tour running from March to July 1980 with a band including Ike Willis and Ray White on guitar and vocals, Tommy Mars on keyboards, Arthur Barrow on bass and keyboards and David Logeman on drums. This band recorded the basic tracks of the album in the summer of 1980 after finishing the tour, with guitarist Steve Vai and vocalist Bob