It's been another big year in music - with ups, downs, breakthroughs and reunions. Andy Welch picks out some of the highlights and lowlights from the world of pop in 2012.

By Andy Welch

Where has 2012 gone? It doesn't seem five minutes since last New Year's Eve, and here we are getting ready to welcome 2013 through the door, with everything it might have to throw at us.

Interestingly enough, many of this year's biggest events in music looked backwards, as if things were moving so fast we couldn't keep up.

Take Adele, for example. She released her second album, 21, in early 2011, but the first part of this year was dominated by stories of her continuing success here, in America (where she's now basically more recognisable than the Queen), and also in love. Perhaps bad news for someone so good at channelling heartbreak into their songs, but Adele is now married with a little baby and reportedly in no rush to get busy with her third album. But then, with 21 selling more than 25million copies worldwide, she can afford a little break.

However, Adele did find time to write and record the theme tune to Skyfall, the latest Bond movie, providing a suitably grandiose soundtrack to what has since become the highest grossing film of the year.

Riding the wave sparked by Adele's success - the thirst for soulful female singers with huge voices - was another Adele. Or, as we know her, Emeli Sande (though called Adele, she uses her middle name for work purposes). On the back of a No 1 single with Professor Green, the former medical student released her debut album Our Version Of Events in February, the same month she picked up her BRITs Critics' Choice award. The debut has now been named the biggest selling album of the year.

The big event in March harked back to bygone days too, all the way back 2009. That's right, Girls Aloud announced they would be getting back together after a three-year break. Initially intended to be just a year, the hiatus turned into something more substantial, largely down to Cheryl Cole's onward march as the nation's favourite solo artist-cum-shampoo salesperson. If rumours are to be believed, there was the small matter of a rift between the rest of the girls and Nadine, although they must quite like each other because, since the original announcement, they've released two singles, a greatest hits and announced an arena tour for next year.

By June, Girls Aloud's spiritual aunties, the Spice Girls, reconvened to announce a stage musical penned by Jennifer Saunders and featuring their songs. Whether or not they'll mime alongside each other once again remains to be seen...

The biggest reunion of 2012, however, was The Stone Roses. They announced their plans last year, but June saw them play three dates at Heaton Park in Manchester, before jetting off around the world, presumably via Cash Cow Airlines. Their shows in Manchester were beset with problems; 90-minute queues at the bar, overflowing toilets, bad weather and perhaps most of all, Ian Brown's voice. It was like they'd never been away.

Most of the summer was dominated by the Olympics. For much of July and August, all eyes of the world turned to London. The first thing they will have seen was the opening ceremony, masterminded by Danny Boyle. What could have been a futile attempt to match the sheer scale of the Beijing ceremony was actually one of the most joyous things of the 21st century.

Britain's engineering past, multi-cultural society, welfare state and illustrious popular culture were all showcased side by side, to a soundtrack better than anything any other country could put on.

The athletes - and Claire Balding - took centre stage for those few weeks, and deservedly so, but by the time the closing ceremony came, it was a musician once again in the limelight. Or four of them in this case - Dave, Alex, Graham and Damon of Blur.

They played their "last ever" concert at Hyde Park in early August, although they've since confirmed a handful of shows for 2013. Perhaps all the good vibes surrounding the Olympics led to a change of heart, or maybe they wanted to sell a few more copies of the accompanying DVD!

Talking of wanting to sell a few copies of something, Rihanna's Talk Talk went to No 1 on the album chart in August, nine months after it was first released and with the lowest number of sales for any No 1 album since the chart was first compiled in 1994. Summer is a quiet time for album sales - especially post Olympics as it was, when people's minds were elsewhere - but around 6,000 sales to get a No 1 shows what flat-out depressing state the music industry is in.

The live scene is still booming, but the bubble will eventually burst. Particularly if wrinkly old rockers like the Rolling Stones carry on demanding crazy money for a ticket.

"How does it sound in the cheap seats?" joked Mick Jagger on stage at the first of the band's four 50th anniversary shows. "Oh that's right, there aren't any."

Very good, Mick. It's the way you tell 'em.

It's OK for him, 'Keef' and the band charging that much for tickets - which started at a frugal £106, with the most expensive hospitality package coming in at around the same amount as a deposit on a three-bedroomed semi.

They made their money, and now, while richer than Croesus, can rinse their affluent worldwide fans for all they want. Just a shame there's no money for the rest of the industry.

And talking of declines in popularity, it'll be interesting to see what happens to James Arthur, winner of the least-watched series of The X Factor. Will any of the six-or-so million people who saw him on the show remember who is by the time he releases an album of sub-Ed Sheeran acoustic, hip-hop-infused ballads next year?

See you here this time in 2013 and all will be clear...

Biggest selling singles of the year (so far)

:: Gotye feat Kimbra - Somebody That I Used To Know

:: Carly Rae Jepsen - Call Me Maybe

:: Fun feat. Janelle Monae - We Are Young

:: David Guetta feat. Sia - Titanium

:: Nicki Minaj - Starships