While fleeing back to the Wall, Samwell Tarly tells Gilly the wildling girl that it will be pleasant at Castle Black: Hobb the cook makes nice food, and Dareon often sings at meal-time (it's unclear if he meant before he left for Eastwatch-by-the-Sea).
In the A Song of Ice and Fire novels, Dareon is an apprentice singer from the Reach, sent to the Wall after being caught in bed with a daughter of Lord Mathis Rowan. Even though Dareon maintains that she was waiting for him naked and helped him into her room, she named it rape under her father's eye.
He's also an excellent singer, known to sign for the Watch during dinners; Maester Aemon describes his voice as "honey poured over thunder." Jon describes him as "quick but afraid of being hit."