I visit Manchester regularly due to my kids living there (well Salford) and I've got to say I love the place.
Friendly Northern type people and always seems to be bouncing
By important I mean bands that have influenced and even changed history, culture, fashion etc - you don’t have to even like them.
For me in the UK there’s been two - The Beatles and Sex Pistols, maybe the Specials with the 2 tone movement 🤔