Listen to A Wedding Poem - I would be true, for those are those who trust me (The Londonderry Air) online. A Wedding Poem - I would be true, for those are those who trust me (The Londonderry Air) is an English language song and is sung by The Choir Of Seaford College Chapel. A Wedding Poem - I would be true, for those are those who trust me (The Londonderry Air), from the album National Trust - The Wedding Album, was released in the year 2005. The duration of the song is 1:51. Download English songs online from JioSaavn.