Shannon Express is a male barbershop

Barbershop music

Barbershop vocal harmony, as codified during the barbershop revival era , is a style of a cappella, or unaccompanied vocal music characterized by consonant four-part chords for every melody note in a predominantly homophonic texture...

 chorus based in Potton

Potton

Potton is a town and civil parish in Bedfordshire, England. It is 10 miles from Bedford and the population in 2001 was 4,473 people. In 1783 the 'Great Fire of Potton' destroyed a large part of the town. The parish church dates from the 13th Century and is dedicated to St Mary...

, Bedfordshire

Bedfordshire

Bedfordshire is a ceremonial county of historic origin in England that forms part of the East of England region.It borders Cambridgeshire to the north-east, Northamptonshire to the north, Buckinghamshire to the west and Hertfordshire to the south-east....

, England

England

England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, with the North Sea to the east and the English Channel to the south separating it from continental...

. The chorus formed in 1978 and has twice won the British Association of Barbershop Singers

British Association of Barbershop Singers

The British Association of Barbershop Singers is a British organization of male barbershop singers. It is affiliated with the Barbershop Harmony Society....

 (BABS) gold medal, in 1995 and 1998. The chorus meets every Thursday from 7.30pm to 10.15pm at Potton Lower School.

The group is named after the original engine

Locomotive

A locomotive is a railway vehicle that provides the motive power for a train. The word originates from the Latin loco – "from a place", ablative of locus, "place" + Medieval Latin motivus, "causing motion", and is a shortened form of the term locomotive engine, first used in the early 19th...

 that ran on the railway from Potton to Sandy

Sandy, Bedfordshire

Sandy is a small market town and civil parish in Bedfordshire, England. It is between Cambridge and Bedford, and on the A1 road from London to Edinburgh. The area is dominated by a range of hills known as the Sand Hills. The River Ivel runs through Sandy. The dedication of the Anglican church is to...

 and whose construction was begun by Sir William Peel and opened in 1857.

A sister chorus is the Phoenix Ladies Showcase Chorus.