These are the packages that would be merged, in order:

Calculating dependencies ... done!
Dependency resolution took 1.04 s (backtrack: 0/20).

[ebuild  N     ] media-libs/libmpdclient-2.23-r1::gentoo  USE="-doc -examples -test" 70 KiB
[ebuild  N     ] dev-libs/confuse-3.4:0/2.1.0::gentoo  USE="nls -static-libs" 643 KiB
[ebuild  N     ] media-sound/scmpc-0.4.1::gentoo  87 KiB

Total: 3 packages (3 new), Size of downloads: 799 KiB