Bum wine is any inexpensive low-end fortified wine that typically has an alcohol content between 13% and 20% alcohol by volume (ABV). These inexpensive wines usually contain added sugar, artificial color, and artificial flavor. Thunderbird, called The American Classic, is named for the Thunderbird Hotel in Las Vegas, NV, between 13% and 18% ABV. It has been popular since the 1950s, when a popular rhythm and blues song went: 'What's the word? Thunderbird / How's it sold? Good and cold / What's the jive? Bird's alive / What's the price? Thirty twice.' It was once marketed in the United Kingdom as 'The California Aperitif,' and there is now a sister version, Thunderbird ESQ. It has also been the subject of many songs, three of which, recorded by ZZ Top, Seasick Steve, and They Might Be Giants, are aptly titled 'Thunderbird.' Influential Detroit garage rock band The Gories had a song entitled 'Thunderbird ESQ.' Rock band Clutch mentions the beverage in their song 'Worm Drink.'