Yes, you can.
If you're trying to do this, you need to enable one option in your album:
"Album is a compilation of songs by various artists"
You can find it by right-clicking the album and looking above the rating and below the disc number.
After that, add the songs to the album by selecting the songs and changing the album name for them (make sure they match the album name!).
There you go! If they're in the same album but they all have matching names that obviously shouldn't, you can change their names after enabling the option for the album.