Listen to The Counties Medley: The Mountains of Mourne / Moonlight in Mayo / Lovely Leitrim / The Girl from Donegal / When Irish Eyes Are Smiling online. The Counties Medley: The Mountains of Mourne / Moonlight in Mayo / Lovely Leitrim / The Girl from Donegal / When Irish Eyes Are Smiling is an English language song and is sung by Joe Lynch. The Counties Medley: The Mountains of Mourne / Moonlight in Mayo / Lovely Leitrim / The Girl from Donegal / When Irish Eyes Are Smiling, from the album An Irish Singalong, was released in the year 2013. The duration of the song is 4:37. Download English songs online from JioSaavn.