A live band sets the mood for a backyard Sunday better than any playlist. You want the music to hit just right while you host, so get your timeline set early.
Aim for a Sunday afternoon slot to save on artist fees, as bands usually charge less when they aren't working prime Saturday nights. Booking three to six months out helps you lock in the rate and secure your preferred group.
That 18-month window is a deadline, not a gift. If you still have a balance once the time is up, the bank will start charging interest on whatever is left, which gets expensive fast.