- find the title of the song;
- confirm that this was actually the song I'd heard;
- discover that it was part of a musical;
- find the title of the CD-set of the musical;
- buy the CDs;
- find the website of the musical;
- find the country and place where the musical was still being performed, including when;
- find the phone number and opening hours of the booking office;
- get a map of the city, and directions to get to the theatre.
I could've done my hotel and flight bookings via the Internet too, but it wasn't necessary in this case.