There's a singer-songwriter living in Monto, and then there's a gap. The next acts on this page are all in Gladstone, most of two hours away over the range, and the ones after that are Bundaberg's. For a North Burnett town of this size that's a decent result, but it does mean the page has exactly one act with no drive attached and nine with a long one.
Which makes the local act the sensible first enquiry rather than a polite afterthought.
Top picks are the nearby performers with the most visible reviews, then rating, then the closest; further afield the closest come first, and premium listings break remaining ties. Distances are straight-line from Monto. Ask each act whether they travel to your venue and what that costs.
Not one who lives there, but Gladstone's DJs are the nearest and a couple of them appear high on this page. A DJ is the easiest act to bring that far, because it's one vehicle and no band to feed, and they'll usually quote a straightforward travel line rather than a minimum-night fee. Give them the hall or venue name and the finish time when you enquire.
Hours and travel, in that order. A four-hour hall booking with a full rig is a different number from two hours of background music, and every quote from the coast carries a return drive across the range on top. The from-prices on the DJ cards above are the starting points; the venue, the date and the distance are what fill in the rest.
It's about the same order of trip as Gladstone, so not out of the question, just not close. Bundaberg supplies more acts in reach than anywhere else on this list, which means the choice is wider even if the distance isn't better. Compare a Bundaberg act against a Gladstone one on what they actually do, since the drive is a wash.
One local singer-songwriter with no travel to recover is a genuinely different quote from a Gladstone act making a four-hour round trip. Even if he's not quite what you pictured, ask before you widen the search.
The run across from the coast is long enough that most acts will want a decent booking, not an hour. If you can stretch the set or add a ceremony, the trip starts to make sense to them and the travel line gets easier to swallow.
Two of the nearest acts are Gladstone DJs, and one person with a car and a couple of cases is a much simpler trip than a band with a van. For a hall dance or a birthday, that's usually the cheaper way to fill the room.