I like lyrics, meaning and the voice! The overall sound should be good ;P
What intrigues you most about a song?
I call it the "chemical X". How do I explain.. It can be a very simple song, but if it has the X it's one of the best. Then again, the song can be very complex and thought out, but without that chemical, soul or whatever, it ain't worth squat.
The guitar and lyrics like page and plant and eddie van halen
the beat in the song.