Hey all. Here's a song I recorded last year while teaching a unit on the French Revolution at the High School where I used to work. I wouldn't really call it Opeth-like, but it's metal.
http://www.myspace.com/beyondentropy
I got one of my students to do some guitar solos, and vocals on the chorus (his is the higher voice) and the opening scream. I'm doing all rhythm guitar, the harmonized solo at the end, bass, verse vox and deep chorus vox. No effects on the voice, btw (except the delay on the scream at the start). Just lots of tracks. I did all the drum programming on my digital recorder, so it's a bit limited compared to working with a live drummer.
Oh and no amps were used on this recording. All modeling. Ain't technology grand?