Blowing in the wind

66, 6-66, -56, 5-44, 56, 66-66-56 5-56, 66-66, -56, 5-44, 56, 65-55, -4 5-56, 66-66-565-44, 5666-66-56 5-5-55-4, -4555-44, 5-5-55-4, -44-34