Voluntary II

Samuel Long was organist of the parish church of St Peter le Poer in the City of London. He is listed as 'Mr Samuel Long, Organist of St Peter-le-Poor, Broad-street' among the subscribers to William Riley's essay Parochial Music Corrected, London: 1762, and contributed two psalm tunes to Riley's accompanying anthology, Parochial Harmony.

A further three psalm tunes by Long were included in A Collection of Melodies for the Psalms of David, according to the version of Christopher Smart, published by J. Walsh in 1765. One further new tune attributed to Long was included in the collection The Divine Harmonist's Assistant, London: [c1786], compiled by William Riley and published posthumously by his widow, and another was included in Francis Roome's The Harmony of Jerusalem, London: (1801).

Several songs by Long were published during his lifetime, and a set of Four Lessons and two Voluntarys for the Harpsichord or Organ was published posthumously by his widow [c1770].