However, this particular composer turned out to be a bit of a late-bloomer, and by the time his true abilities actually did manifest themselves, this composer ended up not only being one of the immortal greats of music, but the dominant force of Western artistic life in the second half of the 19th century. Not bad for a late-blooming Richard Wagner, eh?
Here's Wagner's Concert Overture No. 1. It's a pleasant-enough work with some Beethovenian influence, and not a hint of Rheingold or Tristan und Isolde to be found.