This play invites you to a wedding reception, in which the guests are you, the audience. The set-up is simple: the audience sits facing each other around some simply decorated trestle tables. On either end are two computers with accompanying sound system and, initially, both the piece’s actors. The pair play a medley of romantic songs, some of which have been requested in advance (via email) by members of the audience. Some of these have very personal dedications, which are read out by the actors. The dedicatees are only identified if they want to be and, only then, stand up out of their seats.

This is less conventional theatre and more a staged group therapy. Although the players move on, and develop the piece from this stark set-up, the real stars here are the audience’s emotions and personal experiences. Each performance will be unique in its detail. Rarely does the performance seem too invasive, however. Only at the end when the audience is invited to join the central pair in a first dance, do we ever feel we have to do something we may not want to do. By then, the complimentary cava that has been poured has successfully uninhibited most of us.

A safe, emotive environment is created, tending to smooth over any of the piece’s cracks. And those cracks aren’t minor — the performance’s structure is stiff and unsure of itself, and there are moments of emotional overindulgence resulting in melodrama or schmaltz. It can be very earnest. But these broad brush strokes also work wonderfully at other times — a devastating outburst set to Kate Bush’s Hounds of Love, is particularly effective.

It’s certainly an experience which leads you to question boundaries, both physical and emotional. The heavy use of music, the constant barrage of emoting and the unusual intimacy may not be for everyone. But for the adventurous and the romantic, it’s an affecting experience.

Thee are further performances tonight (Wednesday) Box office: 01865 305305 (www.oxfordplayhouse.com).