Led Zep Week: Unknowns discover something special

I'm reading "THE ROUGH GUIDE TO LED ZEPPELIN" during *LED ZEP WEEK* and after reading about the band members' backgrounds, I have reached the fledgling early days.
Although they eventually rose to ROCK GOD status, the band originally set forth as a rather risky proposition -- a pair of session musicians combined with a pair of unknowns.
Even the earliest rehearsals convinced one of the unknowns -- vocalist ROBERT PLANT -- that the quartet were onto something special.
Plant explained:
"Although we were all steeped in blues and R&B , we found in that first hour-and-a-half that we had out that we had our own identity. I could feel that something was happening within myself and to everyone else in the room. It felt like we'd found something that we had to really be careful of because we might lose it. The power of it was remarkable."
They found something remarkable and enduring, as well all subsequently learned.