99% of the home routers available today will be more than adequate for streaming music, as long as your carrier service is at least 10-15 mbits/sec. Other than that, they will not make a difference.
Go with a slightly older router (11N or 11AC) instead of 11AX or above. The software stability is bound to be better since those versions are much simpler.
Also, for better penetration, use 2.4G instead of 5G. You are more likely to get more interference but if you dedicate one band (basically do not use auto if you can) to streaming and push everything else working on 2.4G to the furthest away band, you will also minimize your interference.