C.R. (technically Compassionate Revolution, but always shortened to the initials) hailed from New York and played ultra fast and thrashy hardcore influenced by both grindcore and straight-edge. These guys were active for a few years at the end of the 1990s and released a few Eps and one full length. Their sound definitely put them within the orbit of the best from the vibrant east coast hardcore scene at the time - bands like Drop Dead, Ulcer, Dissension and Hail of Rage or even VA grinders Enemy Soil. Here is their discography CD, simply titled "46 Songs."
C.R. - Forty Six Songs