People thought Bruce Springsteen was playing a surprise gig at The Long Hall last night, but it was just Dermot Kennedy

Kennedy launched the Guinness 'Live & Rising' campaign with sets at various Dublin pubs

If you were enjoying a quiet drink in a couple of Dublin's best pubs last night, you may have been a tad surprised to suddenly hear the dulcet tones of one of Ireland's biggest musicians ringing out.

Dermot Kennedy played a rare intimate gig in pubs including The Long Hall, Toner's and Devitt's in Dublin yesterday evening, to launch the Guinness-sponsored 'Live & Rising' campaign.

We jest, of course; it was clear that there was something special going on in each pub as punters had to queue to get in. Kennedy had earlier played the Guinness Storehouse, becoming the first artist to ever play on its roof.

Still, considering The Long Hall is a well-known favourite haunt of Bruce Springsteen, and The Boss is in Dublin this week for a run of gigs at the RDS, if you were passing (or indeed, queuing) the pub you might have put two and two together.

One fan found out to his chagrin that he had been queuing for the wrong person...

However, given how popular Kennedy is, many were clearly delighted to see him as he played both acoustic versions of his own songs like 'Better Days' and 'Outnumbered', and a few classics like 'The Parting Glass'.

He even threw in a cover of Bruce's 'Atlantic City' in The Long Hall, for the people expecting The Boss himself.

If you're heading along to Bruce Springsteen and the E Street Band at the RDS, by the way, here's everything you need to know.

And if you were wondering whether Kennedy might make a surprise appearance with Bruce at the RDS this weekend, it's looking highly unlikely; he starts his US/Canadian tour in Vancouver on Saturday.