New string quartets are mushrooming at such a rate these days that it's almost impossible to keep tabs on them all.

At the start of what will hopefully be a long and productive life, each one is likely to dazzle as much as delve.

This was the case with the Finzi, first-prize winner in this year’s Royal Overseas League competition and recently quartet-in-residence for two weeks at Aldeburgh.

It needs no further lessons in attacking the music, its restlessness in the stormier passages of this programme at the latest of the Riverfront's Celebrity Classical Concert Series giving Mozart, Debussy and Brahms the sort of jolt that makes the audience sit up.

One began to speculate if it were not the drive rather than the ambience which gave rise to some troublesome intonation.

Beneath the turmoil, however, these musicians were capable of a cool delicacy, particularly in the slow movement of the Debussy G minor String Quartet, a place of enchantment and repose in sharp contrast to the opening - spontaneous but in this case with a fair amount left to chance - and the deftly-handled scherzo.

In Brahms’s C minor Quartet Op.51 No.1 they accommodated unleashed emotion with the right balance of technique and temperament, though at times the sheer whoosh of the playing was headlong.

Mozart’s B flat ‘Hunt’ Quartet No. 17 was as good an example as any of how much has gone into preparing the way for leader Sara Wolstenholme to keep things both on cue and on the move. Refinement, of course, will be ongoing.