Who composed Ka Keili? What is the earliest source for this song?
The question would be much improved if you'd include what you know about it: specifically, where you came across the song.– msh210 ♦Apr 1, 2012 at 18:17
What is Ka Keili?– Adam MoshehMay 20, 2012 at 5:05
1@AdamMosheh It is a piyut customarily recited before Musaf on Yom Tov (specifically, after the Haftara and before Ashrei), unless Yizkor is recited. It is found at least as far back as in the siddur of the Shlah.– FredApr 29, 2015 at 21:46
1piyut.org.il is a wonderful site, but some of their attributions are wrong. I would not take them as the final word on authorship.– JXGMay 25, 2011 at 9:57