It’s a six-hour flight from Britain to Senegal, so the musician Seckou Keita and his West African harp - the kora - were figuratively a long way from home at this concert.

He now lives in Nottingham but he did spend the intermission making sure the instruments he is playing on tour with Welsh harpist Catrin Finch remained in tune with this country’s temperate clime.

The duo’s month on the road performing in the wake of their award-winning album Clychau Dibon will soon be over. Their reception has been ecstatic.

The two certainly click together on stage. Finch plays a concert harp and a smaller electric one and, while the kora is more primitive but no less singular, it was often difficult to tell who was doing what.

This is essentially a collaboration in which the tunes have Welsh and African references though not always musical ones. For example, Les Bras de Mer is as much about Cardigan Bay, Ms Finch’s home territory, as it is about its counterpart in Keita’s country of birth.

While it is always useful to bear this in mind, the music itself, elsewhere praised as ‘intricate, ethereal and entrancing’, for this reviewer often borders on the diffuse and monotonous. One of the problems with marrying music from different traditions is that you end up with a sound that’s neither one thing nor the other and which struggles to make the whole greater than the sum of the parts.

Finch, originally a classical harpist in the Western style, is increasingly extending herself into fusion territories with projects involving musicians from other cultures. In order to witness how she and her collaborators have come up with something new, one needs to hear the instruments individually in their own settings. For instance, some demonstration by Keito alone of Senegalese music might have provided evidence for the extent to which it contributes to something new and interactive. At the end of the concert, as it were, we need to know what the combination amounts to musically.

Ms Finch excels in accommodating rather than overpowering her colleague so that the two are able to bounce off each other in improvisatory style. It is, perhaps, the partnership’s most appealing outcome on the night - that, and the way the focus shifts constantly between Africa and Wales.