Saturday at the Bristol Academy was unique in a number of ways. Portishead emerged from a seven year recess to share the stage with fellow locals Massive Attack and both delivered a staggering, note perfect, live set.
Billed as being "nearly-unplugged", the sound of these bands was airy and immaculate, the natural beauty of their songs shone through without major 'electronic' assistance.
However, there was a lot more to the gig than just this.
The concert was one of many in Bristol set up in association with Oxfam to assist those affected by December's tsunami in Asia.
Money raised by the event will go to Oxfam's relief effort in the areas affected by the catastrophe. An Oxfam spokesman said: "The guys from Massive Attack and Portishead have done a fantastic job in pulling all this together.
"Not only will the concerts help Oxfam raise funds for our life-saving work in Asia, they will also help people understand the underlying causes of poverty, and give them ideas as to how they can make a difference."
Now you could just give £30 to the Tsunami Aid Project, but why not be entertained as well? It was fantastic to see so many major stars playing on the same bill and giving their time and energy to such a heart-wrenching cause.
So who played? First up were Patrick Duff and Alex Lee, formerly of Bristol band Strange Love, followed by Fuzz Against Junk.
The former treated us with Western style movie themes. I particularly enjoyed the flute and double bass playing of the latter, and was reminded of the 'folk-psych' sounds of Jefferson Airplane.
Both delivered mellow unplugged sets and warmed the crowd up nicely.
Next up were The Coral, who were entertainingly jangley in a distinctly Beatlesque way. They very effectively set the scene for the rest of the show.
I've been a fan of Robert Plant and his former Led Zep colleagues for 25 years now, and it was great to see him playing live again.
Robert Plant And The Strange Sensation floated on to the Bristol stage and delivered a leisurely semi-acoustic set, ably supported by 'Wayward Sheiks'' guitarist, Justin Adams. Enjoyable, but I couldn't help missing my childhood hero, Jimmy Page.
The 'Special Guest' slot for the evening was a complete surprise! I am slightly embarrassed to admit that it took one whole number before the penny dropped as to who I was watching. I'm sure I'm not alone in this.
A shadowy figure in a shell-suit, sitting on a tiny seat hunched over a miniature guitar. The opening chords of Tender streamed across the venue. Yes - this was Damon Albarn of Blur and Gorillaz fame.
His performance was strong, sincere and touching, and the songs' refrain of "Come on, come on, get through it... Love's the greatest thing" struck a chord with the packed crowd.
He reminded us: "Helping tsunami victims is not just about giving money - it's also about people working together and raising awareness. Find out about what's happening in other countries."
He reinforced the message of forging links and supporting others, and he highlighted Oxfam's current 'Make Poverty History' campaign. He exited to rapturous applause. What an inspirational man.
The night just got better and better - next up, Massive Attack. What a treat to see the band in a relatively intimate venue, and unplugged too. This gig was a world away from the last time I saw them, 18 months ago in Queen Square.
No huge screens and lightshow, just the essence of a great band. They played Karmacoma to a delirious audience, and then topped it by welcoming ex-Cocteau Twins, Liz Fraser to the stage for Teardrop - beautiful.
I had been tipped off earlier by another punter that something special was going to happen between the sets played by Massive Attack and co-headliners Portishead, and I wasn't disappointed.
Massive finished off with an instrumental version of Portisheads' Glory Box and got an incredible response from the crowd. Singer Beth Gibbons then joined them and the crowd went wild as the Massive and Portishead jammed the song together.
Seven years is a long time to be away, but Portishead were just a fresh as I hoped they'd be. Beth was in great form and has such a fragile and emotive voice.
We were treated to Mysterons, Wandering Star (awesome), and the poignant Roads among others. It was a shame to see them finally leave the stage - they were sheer magic.
They plan to team up with Massive Attack again in April - 'double trouble' at its most wicked!
If you are one of the thousands of people who couldn't get tickets for either night, it is possible to view a webcast of the Saturday concert online. It costs £4.50 with cash going to Oxfam.