Just like in that Bjork video

Life would be more interesting (and fun!) if people just suddenly, in the midst of dialog, broke into song and dance routines like they do in musicals. Long lines or crowded supermarkets might not feel so tedious if there was music and jazzhands to distract me.

Is it obvious I watched Fiddler on the Roof last night?
Gwen Stefani has nothing on Topol singing If I Were a Rich Man.