Gustav Mahler (1860 - 1911) was a Austrian classical composer but was born in Bohemia which was then part of the Austrian Empire.
I initially found his music uninteresting but discovered that you have to listen to it repeatedly when you eventually become converted.
I remember once, Sue and I leaving Melbourne's Myer Music Bowl in the middle of Mahlers 5th Symphony as we were so bored with the music so it is perhaps surprising that I have picked the Adagietto from that same symphony as one of my favourite pieces of music.
It became popular when it featured on the sound track of the film "Death in Venice" and the track below is played by the Vienna Philharmonic conducted by Leonard Bernstein.
Mahler is known as a 'romantic' composer and wrote 10 symphonies in all as well as many songs
Gustav Mahler discography can be found here.