Guess the T.V Theme Song

You will be shown a series of twenty audio clips from TV shows. All you need to do is grab a pen and piece of paper and write down the answers. Good Luck. Answers are below. \r
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ANSWERS \r
1) The Simpsons \r
2) Doctor Who \r
3) F.R.I.E.N.D.S\r
4) Eastenders \r
5) Benidorm \r
6) The Fresh Prince of Bel Air\r
7) Baywatch \r
8) Family Guy\r
9) Coronation Street \r
10) American Horror Story \r
11) Big Brother \r
12) The Only Way Is Essex \r
13) Games of Thrones \r
14) Once Upon A Time \r
15) X Factor \r
16) Hannah Montana\r
17) The Walking Dead \r
18) Downtown Abbey \r
19) Take Me Out \r
20) Merlin