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

Calculating dependencies ... done!
Dependency resolution took 1.02 s (backtrack: 0/20).

[ebuild  N     ] media-libs/id3lib-3.8.3-r12::gentoo  USE="-doc -static-libs" 929 KiB
[ebuild  N     ] media-sound/id3v2-0.1.12-r1::gentoo  119 KiB

Total: 2 packages (2 new), Size of downloads: 1048 KiB