If the intent is to get a list of songs together to play or for a band for this place, asking a group of musicians is the perfect way to end up with a list most people won't like. Us musician types typically have a different personal play list than those hanging in the places we play. The best way to do it is to find out what the age range is of the folks in there and cater to that age group.
You need to keep updating the list as time goes on. I can't tell you how sad it is to me to swing by a bar where a band is playing and go in for a drink and hearing the same songs I heard a decade ago. I tend to not stay long when that happens and am not in any hurry to stop back in there, at least to see the band that was playing.