Twenty years ago, an album, “Glad: The Acapella [sic] Project” provided a major impetus in the resurgence of a cappella singing. Mind you, Glad had already experienced a good run as a Christian “band,” beginning in 1972, but this watershed album was the group’s real breakout. I can’t find it anywhere but as a used recording–and then only at Amazon.com as a cassette tape, so you’ll have to look for a CD at a used CD store, I imagine–but I did want to feature one cut from the album, because it is a seriously good Christmas song: “In the First Light.” If you find it to be as good as I do, perhaps you’ll look up (and purchase) other Glad projects.