ZREO has experienced quite a bit of change during its short lifespan. It can be separated into four distinct phases.
zreo.tk
(Oct 2004 – Dec 2004) Zelda Reorchestrated was first established under the domain http://www.zreo.tk in October 2004. It was here where ZREO first began its goal of reorchestrating the complete soundtrack from The Legend of Zelda: Ocarina of Time.
zreo.net
(Dec 2004 – May 2005) The next step was obtaining an independent domain name without the troubles of the free .tk service. In December 2004, zreo.net was born. It was the same site, but different (and more flexible) domain. It was here when FireGS revealed that he intended on reorchestrating the music from every Zelda game.
zeldamusic.org
(June 2005 – December 2005) In April 2005, FireGS wanted to achieve a much larger goal than simply reorchestrating music. He wanted to provide a more general service to the Zelda community. Zelda Music and Media (also known as ZeldaMusic, ZM, or ZM.org) was born under the domain http://www.zeldamusic.org. ZREO continued producing music, but along with that came new community forums, an online radio station (WZMR), and general information about Zelda music! The site came to a close due to financial barriers.
zreomusic.com
(December 2006 – Current) Throughout 2006, HTLOZ II preserved the work of ZREO during its absence. ZREO now presides under the domain http://www.zreomusic.com. It's primary focus is reorchestrating the music from The Legend of Zelda games, re-establishing the community forums, and providing a vehicle for budding artists to present their work to the world!
Heavens Accusations
(April 2007) In mid-April, The Heavens membership boldly accused the ZREO Team for exploiting MIDIs to make their music. The entire event took place on the HTLOZ II forums. It led to a false announcement that ZREO was going to shut down, a decline in ZREO's and The Heavens' face, the deletion of the ZREO Forums from the HTLOZ II Boards, as well as the split of the three entities involved. The Heavens and ZREO ammended their differences and apologized to HTLOZ for the war that broke loose on their forums, but The Heavens, ZREO, and HTLOZ II still went their separate ways. All three groups/sites, despite separating, still have good relations with one another.