In its former life as the Millennium Dome, the O2 housed a diamond collection which attracted one of Britain’s most spectacular heists. Last night featured something considerably more valuable – the composer Ennio Morricone on tour, celebrating 60 years of music, accompanied by the magisterial forces of the Czech National Symphony Orchestra, the Kodály Choir from Hungary and the Csokonai National Theatre Choir. In his 87th year Morricone is small, deliberate, but surprisingly youthful and snazzily dressed in black.

Last night Rebel Heart began to make sense. For over two hours, performing from the album, her back catalogue, and a couple of well-chosen covers, Madonna sustained both a diversity and intensity in her approach to singing about love and sex that probably no-one else could match. We all knew she could sing “Material Girl” or “Like A Prayer” till the lid came off the O2. When she followed those with Edith Piaf, sung to the ukelele, and held nearly 20,000 people in rapt silence, she gave us a much better idea of what makes her rebel heart beat.

It may seem strange to begin a review of a comedy gig with a description of the Tube journey home. But it was noticeable that the crowds who left the O2 Arena in London after Michael McIntyre's new show Happy & Glorious weren't talking about it. About the weather, the full train, what they were up to at the weekend, yes; but his show, no.

Put your hand up if you were in the audience last night, or indeed on any of the nights of this ambitious On Stage Together tour, and came only to see one man, and that man was Paul Simon. I’m sure you won’t need much nudging. After all, after almost six decades in the business, Simon’s star may have dipped – and endured the political controversy of the Graceland years – but has never faded. Sting’s meanwhile, certainly has. It seems that breaking a UN cultural boycott is less of a crime than being the butt of tantric sex jokes.

With his new soul-inflected rasp, there aren’t many singers better equipped to perform through a bout of tonsillitis than Paolo Nutini. (Tom Waits won’t, alas, be selling out the O2.) Last night’s gig was re-scheduled from November when the infection struck. It was postponed even longer than expected for the members of the audience arriving on the broken-down Jubilee line.  

There were silly hats, and venerable, bouncy songs for all the family at the O2 last night. The traditional Madness December tour was Christmas come early for most of the audience, who sang about home, love, and the Middle East as they might do in church next week with rather less enthusiasm. The band’s original hits still hit the spot, though there was also a sense that, as with Christmas carols, the new ones mean well, but just aren’t as good.

Until recently, The National were a band for the knowing connoisseur, best known for their wry wit and tasteful guitar sheen. They seemed too niche for the O2 Arena, where they played their biggest ever UK headline last night. But that big tent of consumerism has now claimed them, and before an appreciative but rather lukewarm audience, somehow they seemed a little more ordinary and mainstream.

Gaga’s relationship with her fanbase, her “Little Monsters”, is quite a thing. I’ve not seen the O2 so permanently on its feet. Large swathes of her capacity crowd are up and dancing right from the opening number. They adore her and are dressed to show it, from middle-aged ladies to gay men to teenage girls to many multitudes of humanity in between.

Lee Evans is one of those comics people either love or can't stick, and the audience at the O2 Arena last night clearly fell into the former camp – not much point in them being there at 55 quid a pop otherwise. For the latter group, though, his new show, Monsters, would be further proof that the Billericay stand-up is all style and no substance.

It could have been an embarrassment all round; a bunch of blokes in their seventies revisiting material that was anarchic and transformative 40 years ago but which they are now performing for 10 lucrative nights in the home of commercial comedy. Fear not, though, Monty Python Live (almost): One Down Five to Go – surely the final farewell tour – proves that quality endures. And in the hands of the show's deviser and director, Eric Idle, it can be made into something new and fresh as well.