Some of the songs I listened to in foreign language are those in series and soaps. In my opinion, they are good songs. This is because the lyrics and instrumentation is well toned together and because of that fact I take off time and download them. This is because they sound very interesting.
I don't just pay attention to the words of whatever song I'm listening to, though the lyrics do sometimes have an impact. There are other contributing factors though, like the melody, the instrumental, the singer's voice and tone and generally how the song makes you feel. I love Japanese anime theme songs though more than half the time I have no idea what they're saying.
It's not just words that make music.. sometimes a song of which words you don't understand can connect deeper to your soul than a song of your mother tongue. It's the emotions that that make you feel a music not the lyrics.