The official app from Key Radio – Number 1 for Manchester. Key 103 and Key 2 both available within one app. See what's playing across our stations: " Key 103 – Playing the hottest music of the moment plus the biggest hits of the last twenty five years. " Key 2 – Playing the greatest hits from the 70's and 80s as well as the biggest songs of 60's, 90's and noughties.