258 Behold, a rose e’er blooming (aka Lo, how…)
I love Marty Haugen‘s music. This is sweet Christmas song in CWB II and (hooray) chords are included, but not the obvious suggestion to use a capo.
For the assembly I’d bring it down from Eb to at least D or even C.
The text is at Hymnary. If you want to buy it on its own, which makes more sense than buying CWB II, you can purchase the sheet music at GIA.