There's a Dorothy Hewitt poem, The Sailor Home From The Sea, set to music by Chris Kempster, with the first two lines, O cock of the morning/With a dream in his hand,

A friend of mine worried that she would start the song, O dream of the morning....

I note that the song is in the DT database, but with the first line, Oh Cock of the North, and with the tune attributed to Martyn Wyndham-Read. I think that's wrong.