As callers, it's our responsibility to be aware of the gig we booked. We
should be familiar with the level of the dancers, the style of the band,
and what this particular community expects. It is the band's responsibility
to provide good music for the dancers, so they also need to be aware
(albeit perhaps to a lesser degree) of the level of the dancers, the
ability of the caller, and what this particular community expects.
To your first story about looping, the band should have been able to slow
down the next time through the dance, even though it may be a pain to redo
the looping. It would have affected the sound, so they could have let you
know that they would only slow down if you thought it was extremely
necessary.
To your second story about the band using a metronome, that sounds like a
band that isn't very good. They need to practice being more responsive to
the dancers' ability.
For your last story, if the band wants a certain mix, that is their right.
Perhaps their style is for the guitar to be louder than the fiddle (maybe
they think the fiddler isn't that good, but don't want to hurt his/her
feelings). As a sound guy, you can do a sound check, then suggest
modifications for the monitors or house. Ultimately, I think it should be
up to the band to decide how they want to sound.
In the future, I think the role of the caller will not be different, but as
bands get more complicated, so will dealing with them. The band and caller
should do their best to work well with each other to provide the best
possible dance environment for the evening.
-Ben Hornstein