I posted this album a year and 1/2 ago. Seems to now be a reality, in the sense that you can buy one on ebay. $1050 US. Ouch. It weighs 1.98 kg. That's a little bit less than 4.6 pounds. SaximusMaximus (it's a cool article) says that your standard tenor is 2.98kg or 6lbs 4oz. So, 1kg/2.2lbs less.