Professional Music Services

The core of our work here at Alto Productions is providing professional musicians for events throughout the United Kingdom. This includes individual musicians (for solo events or orchestra extra work), small ensembles (such as string quartets) and full size orchestras (for choral concerts and televised events). We also provide session musicians for studio recordings, musical theatre pit bands and professional musicians for corporate events.

We manage two independent professional orchestras, the British Sinfonietta and the Welsh Session Orchestra, both established entities in their own right. More information can be found below.

Our additional services include percussion hire, equipment hire and event production.

British Sinfonietta logo  

Our flagship concert ensemble is the British Sinfonietta, an independent professional orchestra.

British Sinfonietta


The British Sinfonietta is one of the UK's leading independent professional orchestras. The orchestra is involved in a variety of engagements including classical concerts, choral concerts, televised events and studio recording sessions. We regularly collaborate with internationally-renowed artists and this has recently included Karl Jenkins, Dame Evelyn Glennie, Noah Stewart, Catrin Finch and Wynne Evans.

The British Sinfonietta is available for concert engagements throughout the UK and worldwide. We also regularly work with choirs for choral concerts in London, Bristol and Wales. Please contact our office for further details.


Principal Conductor: Anthony Gabriele
Associate Conductors: Eilir Owen Griffiths & Edward-Rhys Harry

WSO logo  

The Welsh Session Orchestra is one of the UK's leading studio recording orchestras.

Welsh Session Orchestra


Since forming in 2010 the Welsh Session Orchestra has recorded with Bryn Terfel, West End star John Owen-Jones and the Three Welsh Tenors (Rhys Meirion, Aled Hall and Alun Rhys-Jenkins). The majority of these sessions have featured musical arrangements by John Quirk, one of the UK's most respected arrangers and musical directors, who has also conducted the orchestra on numerous occasions.

The orchestra complements its studio work with live work for musical theatre productions and on-stage performances with world-class pop and rock artists including televised events on BBC, ITV and S4C.

Welsh Session Orchestra Welsh Session Orchestra Welsh Session Orchestra