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

Calculating dependencies ... done!
Dependency resolution took 0.98 s (backtrack: 0/20).

[ebuild  N     ] media-libs/libid3tag-0.16.3:0/0.16.3::gentoo  52 KiB

Total: 1 package (1 new), Size of downloads: 52 KiB