Well, quite obviously the first suggestions that come to mind are the Nikkor lenses. The 50mm basically came in two versions: f:1,4 and f:1,8 (there was also an f:2, but let's forget about it for a while). The f:1,8 is significantly cheaper and lighter than the f:1,4 and it's a superb lens, almost unbelievably sharp and contrasty, I'd say among the best lenses ever made for 35mm cameras regardless of price. However, since you do concert photographs, where light is usually not overabundant, you may prefer the f:1,4 which at least on paper is optimised to work at larger apertures (however, if you think about it, the difference in maximum aperture between f:1,8 and f:1,4 is absolutely negligible). From this point of view, it could even make sense for you to buy a Noct-Nikkor, but these lenses are big, heavy, rare and unreasonably pricey. And again, the difference in maximum aperture is not really relevant.
Concerning the wideangle, Nikkor produced a 28mm f:2,8 with a floating element which is very "fast" for a lens of that focal lenght, very bright and easy to focus in the viewfinder, it has excellent contrast, and thanks to the floating element its sharpness is almost constant from infinity to very narrow close-ups. This lens is also quite compact, light enough, easy to find and not expensive. Some of the best pictures I've ever taken, I've taken with this lens.
In both cases, I suggest you to search for the AI or AIs versions of these lenses. Later (post-autofocus etc.) lenses look horrible (OK, this is a matter of taste) are made with cheap horrible materials (and this is not a matter of taste) and are also horrible to the touch (and this is also a fact); plus, they would degrade the look of your nice F3, the last camera of the F series which is tolerable to the eyes.
Carl Zeiss used to make a series of lenses with (among others) Nikon F mount: the "ZF" series. To be picky, these lenses were manufactured in Japan by Cosina under Zeiss' quality control and design. However, the point is that you could directly mount on your F3 the legendary Carl Zeiss Planar 50mm f:1,4 ZF. Of course these lenses are over the top, possibly the best of all, but they are also quite hard to find and demand high prices.
For the sake of curiosity, which 85mm are you using?