This puzzle requires a sharp wit, a brilliantly agile mind and a superb sense of humour.
Decode the following to find some lyrics from a popular song from the 1970's.
39 8 92 ' 75 16 8 23 A
49 , 53 4 T
39 8 92 90 49 19 90 53 16 16 8 7 G
53 16 A
5 8 92 T
39 8 92