Thanks Martin for all the great work and making Iron Maiden sound the absolute best.
Amazing sounds and work, the best stuff from 70's and 80's still sounds so fresh and great.
The body of work from the Deep Purple days to further 80's with Iron Maiden (etc) really defined the sound of heavy metal as we know.
Iron Maiden never did even sound close to what they sounded with Birch..to bad they never did anything after 1992 and Birch retirement.
Was it ever mentioned why Birch retired so early on?