Certainly no expert but what model, budget, do you need zoom? You will want a fast lense obviously and a good prime lense is significantly cheaper than a zoom. I have a 50mm 1.4 Nikon which is great for low light situations on my D750 but won't get you detail of the band unless you can get close.
I'm sure someone who photographs weddings would have much better suggestions though as they need quality shots in low light and a range of settings.
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