To play music by ear= To something behind someone’s back= to play it from memory to it without his knowledge or when he is not present To be all ears = to listen eagerly or curiously To take a back seat = to play an unimportant or a less important part in something than before To have a good ear for something = to be able to discriminate sounds and tones accurately To be glad to see the back of someone = to be happy that he has left or gone away To lose heart = to become discouraged To have something to heart = to be greatly affected or influenced by it To learn something by heart= to know it from memory Keep your hair on! = calm down! don’t get angry! To let one’s hair down = to have a carefree time, to relax and enjoy oneself after being formal and correct in behaviour To escape by a hair’s breadth = to escape very closely To have a finger in the pie= to be concerned with the matter To put one’s finger on something= to point out or find out exactly the reason for something that is wrong One’s fingers are all thumbs= one is clumsy or unskilled To be neck and neck =to be equally good , to be side by side in a race A pain in the neck= an irritating, tiresome person To stick one’s neck out = to say something with the risk that it may cause trouble