古今和歌集
The compilers included the name of the author of each poem, and the topic (題 "dai") or inspiration of the poem, if known. Major poets of the "Kokin Wakashū" include Ariwara no Narihira, Ono no Komachi, Henjō and Fujiwara no Okikaze, apart from the compilers themselves. Inclusion in any imperial collection, and particularly the "Kokin Wakashū", was a great honour.