The UK's Official Charts Company has just published a pair of new charts, celebrating the rather nebulous and sometimes rather randomly-used label of prog rock, a genre of music that Rick Wakeman noted has been around for a good 45 years "but better late than never!" The charts are intended as a monthly guide to the popularity of the artists which they have included in this realm, and were launched yesterday coinciding with the annual Progressive Music Awards ceremony.

The current Progressive Albums chart is headed by Tame Impala's Currents, but includes Amused to Death by Roger Waters at number 3, and Pink Floyd's The Endless River at number 8.

In terms of overall sales so far this century, The Dark Side of the Moon with 3.8 million sales is narrowly beaten into second place by Muse's Black Holes and Revelations which has sold 4.4 million in the UK.

David Gilmour has just announced his first ever tour to South America, playing Brazil, Argentina and Chile in support of Rattle That Lock, his new album which is released - worldwide - on September 18th. Tickets for the five concerts go on sale on Thursday, September 10th.

The confirmed dates are as follows:

• 12 December: Brazil – Sao Paulo – Allianz Parque On sale: 00:00hrs BRT through www.ingressorapido.com.br
• 14 December: Brazil – Curitiba – Pedreira Paulo Leminski On sale: 00:00hrs BRT though www.blueticket.com.br
• 16 December: Brazil – Porto Alegre – Arena do Gremio On sale: 00:00hrs BRT though www.blueticket.com.br
• 18 December: Argentina – Buenos Aires – Hipodromo de San Isidro On sale: 00:00hrs ART through www.fullticket.com
• 20 December:– Chile – Santiago – Estadio Nacional On Sale: 11:00hrs CLT through www.puntoticket.com

Also confirmed is the touring band accompanying David, who are as follows: Phil Manzanera – guitar, Guy Pratt – bass, Jon Carin – keyboards, Steve DiStanislao – drums, percussion, Kevin McAlea – keyboards, Theo Travis – saxes, clarinet (Brighton and Europe only), Joao Mello – saxes (Royal Albert Hall and South America only), Bryan Chambers - backing vocals, Louise Marshall – backing vocals (Europe/UK only), and Lucita Jules - backing vocals (South America only).

On David Gilmour's official Facebook page, it has been announced that The Simon Mayo Drivetime programme on BBC Radio 2 (in the UK) today, September 3rd, from 5.05pm BST, includes an exclusive first playing of the new single from David Gilmour's upcoming album, Rattle That Lock. The show runs until 7pm and as yet we don't know what time the song - called Today - will be aired.

In more news relating to the Drivetime programme, Radio 2 have announced that David will be appearing live on the show on Tuesday, September 8th. As before, the show runs from 5.05pm to 7pm, UK time.

BBC Radio 2 can be heard on DAB and FM radio, via Freeview, Sky satellite and Virgin Media cable, and via www.BBC.co.uk/radio2, which will allow listeners around the world to tune in. The BBC's iPlayer service (at their website, and on Virgin Media) will allow listening on demand for seven days from the date of broadcast, principally for those in the UK, but this does also work in a number of other countries.

With just a month to go (yesterday) until the screenings across the world of Roger Waters The Wall, we have information for you of all the countries where you will be able to see the film on September 29th, as well as a very special opportunity in the latest Brain Damage competition! As a reminder, the film itself is followed by The Simple Facts, a conversation between Roger and Nick Mason, answering questions submitted by fans from around the world.

The image here shows all the countries currently scheduled to participate in screening the film, with a note that coming soon, four other major countries will be also joining in the fun next month - Japan, Malaysia, Singapore, and South Korea.

If you've yet to book your tickets for this, ensure you visit RogerWatersTheWall.com. However, if you are in or around the New York area, you might want to try your luck in our latest competition, to win a place for you and a friend to attend an exclusive screening of the film...

Here are (to borrow a phrase) The Simple Facts of what's on offer:

• Three lucky winners will each be able to bring a friend along to the event
• It is a private and intimate screening of 'Roger Waters The Wall' at a secret, undisclosed location in Midtown Manhattan on September 14th at 5pm, so a condition of entry is that you MUST be able to attend the location at that time and date
• On that note, travel and accommodations are not provided - these will be your responsibility
• The movie will be presented in Dolby Atmos surround sound, the format in which Nigel Godrich mixed the sound in
• The organisers ask that you arrive a bit early if possible
• With your entry, please state your guest's name too, as the organisers will require BOTH names to permit entry to the venue

To win a pair of seats at this exclusive event, all you need to do is answer this question correctly:

• Name all the members of the band who played guitar during a typical show on Roger's 2010-2013 Wall tour

Email your answers to This e-mail address is being protected from spam bots, you need JavaScript enabled to view it with the subject line of "The Wall NYC competition", and include your name, home address, and if you are a winner, your guest's name too. The closing date is September 5th, 2015, and all entries received by the end of that date will be in with a chance of winning. Just one entry per household please - and best of luck to you all!

Remember, you must be able to be in Manhattan around late afternoon on September 14th! Good luck, and however you see Roger Waters The Wall, we hope you enjoy it.