The sessions for the album began at Musicland Studios in Munich, Germany, in the summer of 1976. Glover came on board as co-producer after having met Gallagher when the latter opened for Deep Purple on an American tour. The choice of Glover signified a conscious attempt by Gallagher to try new directions from the hard rock he was best known for. Calling Card is one of his most diverse albums. It also reflects the synergy that the band had developed after years of playing together. As producer Roger Glover commented “they all seemed very dedicated to Rory, there was an allegiance, born of years of smoky clubs and endless journeys”. This was the fifth and last release featuring this line-up.