I've got a bike
You can ride it if you like
It's got a basket
A bell that rings
And things to make it look good
I'd give it to you if I could
But I borrowed it

How can you say that's unlistenable? Now, I'm not saying that they didn't evolve into a totally different band (by the time of Atom Heart Mother/Meddle/DSotM/WYWH/Animals), but the Barrett era was fun. He had a delightfully elastic sense of meter.