It's your song which determines what type of dance you do!
For instance, salsa, foxtrot, swing, bachat,... are all specific dance styles that're appropriate for specific songs. The word Waltz is often used as a generic term, for a wedding dance, e.g. Wedding Waltz, but it is actually a specific type of music in 3/4 time (Moon River, Journey's "Open Arms" or Norah Jones' "Come Away With Me" are waltzes.)
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