The Old Rugged Cross

"" was a hymn that the New Earth inhabitants stuck in the Motorway sang together on the day the Tenth Doctor and Martha Jones arrived.

Its lyrics included:
 * On a hill far away stood an old rugged cross
 * The emblem of suffering and shame
 * And I love that old cross where the dearest and best
 * For a world of lost sinners was slain


 * So I’ll cherish the old rugged cross
 * 'Till my trophies at last I lay down
 * I will cling to the old rugged cross
 * And exchange it some day for a crown

(TV: Gridlock)