Published today on the Pollstar website is an interesting interview with Ron Delsener, concert promoter for the last 50 years, most recently taking the reins on the Roger Waters Wall Live tour - a huge undertaking.

In the interview, which you can read in full here, Delsener reveals that his involvement in the tour started in 2009, and at that stage, Roger had already been working on it for a year and a half, alongside Sean Evans and Andy Jennison.

He noted that "Roger changed the show every night. He added one archival camera. He reviewed the show every night. He went back to the hotel where he, Andy and Sean would go over changes as dictated by Roger. Little things that no one could pick up but Roger did, whether it be sound or visual."

On the subject of return dates in North America, he says "You never know. Now he's got Australia, two to six shows there, maybe more. And so, if they go to Australia, the question is where do they go from there? That's a question for (tour manager) Andrew Zweck. Do they do Japan? I don't know if Floyd was ever big there. That's a question mark. Singapore? Where do you go from Singapore? China? I don't think so. So it's very tricky to take all that stuff over there and it's huge for just six to 10 shows. So they're trying to ascertain right now whether they should continue through the fall of 2011 or perhaps 2012. That's up in the air right now.

"Meanwhile, I've presented something that is currently very sketchy – to return to markets, very few, for a one-night-only encore performance and/or secondary markets where he hasn't played. We've mapped out a little tour about that and it's up to Roger whether he's in the mood or if it's financially feasible to make this thing work on the secondary markets where the ticket prices have to be a little lower. Especially with this economy. It’s hard to get a $250 ticket in Albany."

Visit Pollstar.com for the full interview.