Rock
This instrumental distorted riff-based rock track holds a constant tempo from start to end. It's simply called "Riff song #7".
This track is called "Riff song #6" and is a very distorted, yet triumphant arrangement, centred around a uplifting melody.
This piece "Riff song #2" has a hypnotising electronic foundation accompanied with a lovely distorted guitar riff.
If you are looking for more blues'ish rock'ish track, "Riff Song #8" will do the trick. Simple, hard drums and lots of guitars in a rock'ish harmony with an uplifting development.
Check out more riff-based rock tracks here: