"Can't Stop Feeling" is a perfect catalyst for pre-party mood-setting, as Jamaican dub and throbbing synths boost singer-guitarist Alex Kraponos' lilting vocals to energetic heights.
But the party mood turned to one of horror, as a crash on his moped while travelling across Crete meant instead of soaking up the sun, doctors were instead battling to save his life.
Spokesman Spencer Fitzgibbon said the party were in buoyant mood, claiming that the party's own polling put them ahead of the Liberal Democrats.
Despite this the party's mood in Wales seems upbeat.
BBC: NEWS | Programmes | Politics Show | Wales: Where next for Welsh Lib Dems?
Sam Abrams, a political scientist at Sarah Lawrence College in New York, cannot see any Republican being capable both of winning the nomination of the party in its current mood and appealing to Jewish voters.
But he and his party were clearly in no mood to make an issue of it.
Delegates may feel in positive mood because their party is actually in government, but that's not been reflected in the polls.
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The two-thirds figure had been picked partly because that was the proportion in the Scottish Parliament and partly because it requires "cross-party support and some general mood in the House that there should be an early election", he explained.
But for all the celebrating that the Democrats were doing over the weekend, the mood in the party dramatically changed with Monday's news that Eliot Spitzer, the governor of New York and a leading progressive voice in the party, was embroiled in a prostitution scandal.
He has been touring the country to tell of his accomplishments and gauge the public mood, and exhorting his party's faithful to be ready for an election.
And a turbulent, anti-politics mood, stirred by the tea-party movement, is making even incumbents nervous.
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One night when McClellan wasn't in the mood, he came home from a party and sent a servant to say the general was too tired.
Nor has Mr Meciar's bad mood been improved by defectors from his party setting up a new one of their own, underwritten, it seems, by a company with strong ties to Mr Lexa.
"The mood here rivals a New Year's Eve party, " said Phillips.
Democrats charged with increasing the party's majority in the Senate also are in a cheerful mood.
Labour tweeters urged party members to be respectful - but the Respect MP George Galloway was in no mood for restraint, tweeting "Tramp the dirt down".
He is not going to capture the public mood with that record, any more than he has won the heart of his party.
There were also a number of fringe debates, which covered issues including racial equality, access to the countryside and carers - not forgetting the party's Bond night on Friday, which saw MSPs and activists getting into the movie mood by dressing up as film characters.
Folli says that in the run-up to the election, the party will have to decide whether it makes more sense to back its leader or take heed of the mood in the country as a whole.
The loss managed to put a damper on the mood of the thousands of Toronto fans who lined up outside the Air Canada Centre in a massive tailgate party, watching the game on several giant TV screens.
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