With Scottish heroes Travis, what you see is what you get. This is rather worrying when you consider the title of their forthcoming album: The Invisible Band. On the evidence of the many new songs played at their gig at Dublin Castle, it seems their popular brand of uncomplicated pop and infectious hooks is beginning to vanish.

As Sing's chorus implored us to, eh . . . sing, the outdoor mass-karaoke session got off to a flying start, and the shaded courtyard burst into song with the opening chords of Writing to Reach You. It takes the average human approximately three seconds to learn the chorus of any given Travis song, so by no means did the new numbers get in the way of the sing-along.

Pipe Dreams, a ballad not so much dark, as off-bright, was effortlessly absorbed by the warm crowd. Not even Fran's razorblade Mohican, now dyed a retina-scorching white, could inject a punkish element of discord. Introducing Flowers in the Window, the sympathetic singer announced: "This song is about having kids . . . we all love babies". Raaawwkk!

Of the new material on offer, a bass-heavy Side received the warmest reception from the crowd, but it was the old hits that reliably drew the roars. Driftwood soared, and Why Does it Always Rain on Me saw umbrellas held aloft beneath a thankfully cloudless sky. Ignoring their Britney Spears partypiece, the gig wound up with a dead-on cover version of David Bowie's All the Young Dudes before an impromptu rendition of the hopelessly upbeat Happy saw good vibes resonating into the night.

The new songs may not have been breaking new ground, but that is unlikely to trouble the fans. As Fran assures: "All our songs are simple". Travis's quickly-absorbed rock songs - they do exactly what it says on the tin.