Most bars and pubs are the best places to check if you would like to mingle with other nationalities other than the Spaniards in Barcelona. In pubs you would find the English, Scottish, Welsh, and Irish drinking together as they discuss football or rugby. Such pubs, such as the oldest which is Michael Collins, usually have live bands or music and a television set.
Other examples include Shamrokc, Carrer Tallers, Flann O’Brien, Carer Casanova, The Quiet Man, Carrer Unio and Carrer Ferran. For that last drink under the clear sky of Barcelona, you can go to the Ciutat Vella, Danzatoria, Torre Rosa, and La Terraza.