Later Kyries have more elaborate patterns , such as aaa bbb aaa ' , aaa bbb ccc ' , or aba cdc efe ' .
The Kyrie for the Requiem Mass in the Liber Usualis has this form .
Later Kyrie have more elaborate patterns , such as aaa bbb aaa ' , aaa bbb ccc ' , or aba cdc efe ' .
The Kyrie for the Requiem Mass in the Liber Usualis has this form .