Possible Clues:

• Accordion-heavy genre
• Beer garden sound
• Slavko Avsenik composition
• Lively dance, originally from Bohemia
• ___ dot
• Steps king's installed in a dock to get up
• President Havel's second steps, typically Central European
• Music in some 'Weird Al' Yankovic medleys
• Many a Lawrence Welk dance tune
• "Beer Barrel" dance