Definition: Rewrite each original sentence in order to make it easier to understand by non-native speakers of English. You can do so by replacing complex words with simpler synonyms (i.e. paraphrasing), deleting unimportant information (i.e. compression), and/or splitting a long complex sentence into several simpler ones. The final simplified sentences need to be grammatical, fluent, and retain the main ideas of their original counterparts without altering their meanings.
Input: On July 19, 2000, he formed (with fellow anison vocalists Hironobu Kageyama, Masaaki Endoh, Eizo Sakamoto, and Rica Matsumoto) the "supergroup" JAM Project.

He formed (with vocalists Hironobu Kageyama, Masaaki Endoh, Eizo Sakamoto, and Rica Matsumoto) the "supergroup" JAM Project on July 19, 2000.