...a musical genre characterized by the use of instruments commonly associated with rock music, but using rhythms, harmonies,melodies, timbres, and chord progressions not traditionally found in rock. Post-rock musicians typically produce instrumental music.
As a musical genre, post-rock is arguably too vague to be useful. Don Caballero and Tortoise were among the more prominent bands described as post-rock in the 1990s, but their styles are very different, despite being instrumental bands centered on guitars and drums. As such, the term has been the subject of backlash from listeners and artists alike.
So, before I go into this review, I need to hear some other examples to get a point of reference.
Here are the examples I found on soundcloud:
Nic Bommarito | Better Then Way Too Post-Rock by Bit Rebels