MORBID ANGEL vocalist/bassist David Vincent joined SOULFLY on stage last night (Friday, May 4) at State Theatre in St. Petersburg, Florida to lend lead vocals to the song "Blood Fire War Hate". Fan-filmed video footage of the performance can be seen below (courtesy of MetalThrashingMark).

Vincent originally made a guest appearance on the studio version of "Blood Fire War Hate", which was included on SOULFLY's 2008 album "Conquer".

In a recent interview with Ultimate Guitar, SOULFLY mainman Max Cavalera stated about "Blood Fire War Hate", "I asked David Vincent to be part of it. A great band I always liked was MORBID ANGEL and he did it and did a great job. The song turned out killer and we recorded 'Conquer' in Florida so it was not far from him and he just drove to the studio in Orlando."

SOULFLY is currently touring in support of its eighth album, "Enslaved", which sold 5,900 copies in the United States in its first week of release to debut at position No. 82 on The Billboard 200 chart. The band's previous CD, "Omen", opened with 6,000 units in June 2010 to land at No. 73.

SOULFLY's 2008 album, "Conquer", premiered with 8,400 copies to enter the chart at No. 66. This number was in line with the opening tally of the CD's predecessor, "Dark Ages", which shifted a little more than 8,000 copies during its first week of release in October 2005 to debut at No. 155.

"Enslaved" was released on March 13 via Roadrunner Records. The CD was recorded at TallCat Studios in Phoenix, Arizona and was produced by Chris "Zeuss" Harris, the seasoned knob twiddler behind some of the most notable bands in metal today, such as SHADOWS FALL, HATEBREED, THE RED CHORD and more.