Grooves in these categories were created by session musicians. Their performances were captured and analyzed, and the timing and velocity information was then extracted from the performances. The Bass-Comp patches also contain note length information, though the other categories do not.These grooves were created by analyzing the audio output of an Akai MPC-60. Use these patches to get the same shuffle feeling as an original MPC-60. Note that these patches do not contain any velocity or note length information. There are some additional patches that use the Random Timing feature, which emulates the original MPC-60's behavior when loaded with a lot of information.These grooves were created by a session drum groove programmer. They were hand-crafted to emulate the feel of certain styles, and are divided into two genres: Hiphop and Pop-Rock. These grooves do not contain any note length information.These grooves were created by sampling snippets from classic groove records, analyzing them with a special signal processing tool, then extracting both timing and velocity information from the samples. These grooves do not contain any note length information.