[Tublecane]

“but the same CD that has 8 zep tunes can hold 12 badfinger songs, 23 Gary Lewis 45s, or 28 Chuck Berry greats...Conversely (so and so) can all pop out 20+ minutes at a time.”

My point was more that it doesn’t lose it rockingness for being longer. Of course a simlar effect could be achieved using longer or shorter songs. Assuming the band is at ease to shift from length to length. Some specialize; Zep was flexible.

What length you prefer depends on mood, purpose, and taste. I prefer 4 or 5 minute songs, all things being equal.

[Dr. Sivana]

My point was more that it doesn’t lose it rockingness for being longer.

Of course. And versatile performers like Elton John and David Bowie have made real (not joking around) tracks as short as one minute and longer than 10 minutes. I'll leave it to you to decide if they are capable of producing sufficient "rockingness".

I wasn't attacking long pop music tracks, only those who maintained that short tracks or covers weren't worthy of respect, and they tended to be in the hard rock/heavy metal crowd. I'm not a zep fan, though I do, of course acknowledge that they have the chops on their instruments. Their long songs were murder on those who purchased Led Zep 8-Track tapes. (ka-CHUNK!)