Oww you mean "Mag Mell"? Well mostly wrote it as "Megumeru" because it's the pronunciation but the real title of the song is spelled as "Mag Mell", Irish word for "plain of joy". And as for translations,
http://gendou.com/amusic/lyrics.php?id=8453&show=2. You can search at gendou.com for the lyrics/translations. :)
And actually, I am a big fan of eufonius and I recommend you try them because they have many songs that I really like. :D
And about your last sentence, a definite YES. That's why I merged to J-pop and actually leaning to different music genres (not just pop) because music nowadays only tend to go r&b, hip-hop w/c I'm already not satisfied (actually I'm sick of it). So hearing different kinds of songs really keeps up the mood. ^-^