It is a song by an Austrian group called Falco.

It was composed in the 1980’s as a tribute to Amadeus. There are several versions of that song. The original one is in German. They did an English Version I never heard and they did this one, called the US Radio Version;

1756, Salzburg, January 27, Wolfgang Amadeus Mozart is born
1761, at the age of five Amadeus begins composing
1773, he writes his first piano concerto
1782, Wolfgang Amadeus Mozart marries Constance Weber
1784, Wolfgang Amadeus Mozart becomes a free mason
1791, Mozart composes "The Magic Flute"
On December 5th of that same year, Mozart dies
1985, Austrian rock singer Falco records
Rock Me Amadeus!