The Pet Shop Boys are a band of two halves - Neil and Chris; serious suits and silly headgear; a glorious 80s pop past and a constantly reimagined electronic future.
As singer Neil Tennant talks about a new series of reissued albums and an unheard track, those contrasts - which have always kept the band interesting - are as apparent as ever.
He looks back at how they have always looked forward. He has a lingering affection for old-fashioned physical music while admitting to succumbing to Spotify.
He doesnt like Ed Sheeran but says the singer should be allowed to dominate the charts. He wants you to buy one set of reissues but says not to bother with another.
The ones hes on the phone to talk about are 1999s Nightlife, 2002s Release and 2006s Fundamental, which are being remastered and reissued this month with copious bonus tracks.
One of those is One-Way Street, a previously unreleased demo from the Fundamental sessions, which Tennant says he offered to Bananarama at the time - but has now decided he rather likes.
Their first six albums, which were re-released with similar bonus discs in 2001, are also getting another reissue. But if you already own the first remastered versions, you can save your money, the singer suggests.
Does going through the vaults bring back memories?
It brings back a lot of good memories. It was a lot of fun and people often ask Chris [Lowe] and I how the whole thing has lasted so long. We always have the same answer, because its true: We actually really enjoy going to the studio and writing songs together.
It is work but its also play, and I think when you listen to the newly reissued stuff you can see that we write in different styles and we experiment and we always write more stuff than we need for an album.
Do these albums strike you as being better or worse than youd remembered them?
Happily, they seem to me to be better than I remember. When you work on an album and do promotion for it, you can get fed up with the whole thing after a while. And then you dont really listen to it again very much because youve spent so long making it and then talking about it.
Listening back to Fundamental, I felt really pleased because its quite an epic album and its the only time we ever made an album which has got a strong concept.
We wanted to make an album that reflected what the world was like in the wake of 9/11, the Iraq war and the increasing surveillance techniques used by governments on their own people. It was a paranoid period and actually I think it expresses it quite well.
Tell me about the unreleased song, One-Way Street.
In our studio we have a bookcase and One Way Street is the title of a book by the famous philosopher Walter Benjamin which, I hasten to add, Id never actually read.
Chris was playing something on the keyboards and I saw this book and thought, "thats a good title". Actually its got a catchy chorus. We offered it to Bananarama, who were making a new album. We gave it to them and they rejected it!
The reason we didnt put it out was because I thought the metaphor of a one way street - that something was predestined - was maybe a bit contrived. But listening to it all these years later its very catchy.
Your first six albums are also being remastered again - how much difference will there be?
Well, its a controversial thing in some ways because I think records should just get louder. If you bought the collection in 2001, I would suggest you dont buy them again because I think its a bit ridiculous really. Its exactly the same tracks and the same packaging and the same booklet, its just that theyve been mastered again.
I asked our mastering engineer, Do you think you can make them sound better than they did in 2001? And he said, "Yes we can, definitely." And part of me is even slightly sceptical about that. Youre not getting any extra tracks or anything. Stick to your old ones, thats my advice.
These CDs are physical objects with nice booklets - what do you think of the instant and disposable nature of digital music?
I think having access to everything is amazing. I use Spotify myself sometimes but I also think that what it does is it makes pop music a very casual experience.
Just like reading a book, listening to a piece of music requires a certain amount of commitment from the listener to get the full enjoyment out of it. The ethos of Spotify works against that. When Im at my house in the north of England, thats the only place I drive a car and I play CDs. Sometimes Ive only got one CD.
Always the same one?
No, I change them but sometimes I get locked into an old Joni Mitchell album or something like that. I listen to Hejira relentlessly. Or I started listening to Sgt Pepper relentlessly.
What do you think about the new chart rules (which saw some of Ed Sheerans songs leave the chart)?
Someone at some point decided what weight streaming should have on the chart. I dont know about that. But if Ed Sheeran has got 39 out of the 40 tracks or whatever then good for Ed Sheeran. If someone is having a moment of phenomenal success then good for them.
Dont think, "oh that cant be right so Im going to change the chart". I think its a bit weird. Unless, of course, the whole streaming thing is too weighted. I dont know.
Theyve limited each artist to only three tracks.
But why? Im not a fan of Ed Sheeran but I think its amazing hes done that. I dont think they should change the rules because they dont like it. As though Ed Sheerans success is some sort of chart virus.
They were mostly album tracks.
Well, the question is, in the world of streaming, what is a single? A single is based on a 45rpm piece of vinyl.
Actually on this last album and probably the album before, every single weve put out has been number one in the CD singles chart. At one point we had three singles in the top 10 of the CD singles sales chart! Not many people put out CD singles, apparently.
Do you listen to current pop?
The album Ive listened to this year has been The xxs album, which I listen to in the car up in Durham quite a lot. And I listen to quite a lot of electronic music. I dont listen to that much pop music, actually, but Ill do precisely what I criticised people for doing: Ill flick through things on Spotify.
Your 63rd birthday was on Monday and you posted a photo of lots of fans in Pet Shop Boys pointy hats.
When we arrived at the stage door at the Teatro Real in Madrid there were all these fans outside who had made pointy hats. They also had T-shirts in the style of the Super album saying, "Happy birthday Neil."
Its very touching when people do that. And its sort of surreal. And when we came out of the gig, there were even more - there was a huge crowd of people and they all sang happy birthday in Spanish.
Weve got this tour which were doing until the middle of October, when we end up in South America, which is where we started. And after that I dont know what were doing. Isnt that great? But something will probably turn up.