This past Wednesday, Polly Samson, wife of Pink Floyd guitarist David Gilmour, helped rescue a man drowning near the couple’s East Sussex home.

Reports vary, but Samson is said to have aided the man who was flailing in the sea and, who, after rescue, refused help by trying to return to the water.

The man, who was in his 40s, was eventually taken by police to Royal Sussex County Hospital for mental evaluation.

Gilmour and the couple’s 21-year-old son, Charlie, reportedly assisted in the rescue.

Samson is a writer and photographer.

Gilmour joined Waters, along with drummer Nick Mason, for playing “Outside the Wall” at the end of the show, as well: Gilmour on mandolin, and Mason on tambourine.

The answer: At tonight’s o2 show in London.

Gilmour’s post says the song will be recorded for posting on “various websites,” but is not intended for an eventual DVD of “The Wall” in the works.

“Look on the bright side: that means you’ll get to see it sooner,” the post reads, before adding tonight’s appearance truly is a one-off.

“David is not repeating his special guest performance at a later occasion, I’m sorry to disappoint those of you with fingers crossed and tickets for later shows.”

Waters joined Gilmour on stage at a charity event last July (“David Gilmour, Roger Waters perform together“). The deal, as it was revealed later, was Gilmour agreed to, in turn, join Waters during one show of his “Wall” tour, to perform “Comfortably Numb.”

“Floydian Slip” turned the upcoming pairing into a contest (“Reunion date contest: The results“), asking people to guess the date of the reunion for a chance to win Waters’ “The Wall Live in Berlin” from 1990. Guess the exact date, and we’d throw in a sealed copy of Classic Rock‘s excellent 3D Pink Floyd issue from Fall 2009, celebrating the 30th anniversary of “The Wall.”

We’ll be mulling over entries this evening to determine our winner.

View the listing and place your bid.

The auction, which ends at about 2 p.m. EDT, includes three photos taken of Gilmour and his guitars on Aug. 26, 2006, at the “It Started in Gdansk — The Space of Freedom” concert.

The event took place at the invitation of Lech Walesa to celebrate the 26th anniversary of the founding of Solidarity, the Polish trade union. The photos, taken by Anna Wloch, show Gilmour during sound check; a selection of his guitars; and David and his wife, Polly Samson, with Walesa.

As of this writing, bidding stands at £1,550 — about $2,540.

1. There’s No Way Out of Here
   Pink Floyd’s David Gilmour (VHS) (1984)
2. Island Jam
   On an Island (Outtake) (David Gilmour) (2006)
3. Coming Back to Life
   The Strat Pack (DVD) (David Gilmour) (2005)
4. Dark Globe
   Arnold Layne (EP) (David Gilmour) (2006)
5. I Put a Spell on You
   David Gilmour in Concert (DVD) (Mica Paris f/Jools Holland and David Gilmour) (2002)
6. Murder
   About Face (David Gilmour) (1984)
7. Fat Old Sun
   BBC Radio2 (2002)
8. Castellorizon
   Live in Gdansk (David Gilmour) (2008)
9. Hushabye Mountain
   David Gilmour in Concert (DVD) (David Gilmour) (2002)
10. Smile
    On an Island (David Gilmour) (2006)

We’ll be playing all solo material from David this week, including plenty of rare live stuff.

The set will be more than 50% off its suggested retail price of $134.98 with free shipping in the U.S. That’s at least as low as $67.49.

This limited edition features the full concert including the bonus track “Wot’s… Uh The Deal?,” plus two of the private recording sessions known as the “Barn Jams.”

• Complete concert on 4 LPs
• Extra LP with unreleased tracks from the 2006 tour
• Webpass to enable digital download of all tracks
• Double-sided poster and 20-page booklet

Pop Market is Sony Music’s members-only shopping club for music fans, which offers limited-time sales on selected titles each day. Membership is free.

Visit Pop Market now.

“Knowing what Gilmour played and being able to replicate his sound are two very different things,” Jim Dalrymple writes. “His tone is a mix of effects, amps, guitars and a lot of engineering behind the scenes.”

The article details equipment choices, processor settings (pictured) and more.

Read the article.

Gilmour is featured in several articles throughout the 120-page magazine, covering topics such as his solos, rhythm work, slide guitar technique, acoustic work, and more.

The magazine includes many instructional videos, too.

You can read the magazine free.

GI is an interactive digital magazine for guitarists. Drawing on the resources of teaching resource Licklibrary, GI brings together expert players to analyze the styles and techniques of the world’s best guitarists.

McKinnon, a 45-year-old man from Glasgow who has Asperger’s Syndrome, has been fighting extradition to the United States for supposedly hacking into NASA and Pentagon networks a decade ago to search for evidence of UFOs.

He faces up to 60 years in prison if convicted.

Gilmour has been an advocate for McKinnon, participating in a charity re-recording of Graham Nash’s “Chicago” to benefit his defense and distributing updates about the case through his Web site and Twitter feed.

Government funding for McKinnon’s treatment was dropped last month due to cutbacks at the London National Health Service trust that was paying for his care.