Conversation so far:
What is the Jerry Fisher era?
He was briefly replaced by Bobby Doyle and then Jerry Fisher, who went on to front the next incarnation of Blood, Sweat & Tears.
What was unique about this?
The new edition of Blood, Sweat & Tears released New Blood.
Did it become popular?
The album broke through the Top 40 chart.
How long did it stay on the charts?
CANNOTANSWER.

Question: What else was uniuque about the Jerry Fisher era?
Self-contained rewrite: Besides New Blood breaking through the top 40 chart, What else was uniuque about the Jerry Fisher era?