Steve Gibson out-puckered the rest with a rendition of the Rolling Stones' "Satisfaction" and Deep Purple's "Smoke on the Water."
The top group entry was a self-described "conchestra," whose 24 members pulled off a conch-shell accompaniment and synchronized dance routine to a recording of Abba's "Dancing Queen."
Blowing the conch shell has been a Key West tradition since the early 1800s, when seafaring settlers used it as a signaling device. The shell of the mollusk is a symbol of the Florida Keys, often called the Conch Republic.
The Associated Press contributed to this report.
