Was coming here to suggest a similar thing. Finding opening bands whose names you may not remember can be a pain. Searching by a date doesn't seem to be a thing, so you just have to hunt. What would be a great compromise is what they do with festivals, where you see all the other bands at the festival. A (seemingly) easy fix would be to have a link that simply pulls up any band with the same venue and date as the one you're viewing.
Was coming here to suggest a similar thing. Finding opening bands whose names you may not remember can be a pain. Searching by a date doesn't seem to be a thing, so you just have to hunt. What would be a great compromise is what they do with festivals, where you see all the other bands at the festival. A (seemingly) easy fix would be to have a link that simply pulls up any band with the same venue and date as the one you're viewing.