The standard, accepted order of instrumentation for large ensembles: fl.ob.cl.bsn - hn.tpt.trbn.tba - perc - other - vlnI.vlnII.vla.vlc.db - tape, or electronics. Saxophones appear between clarinet and bassoon.
All other scorings (less than 8 instruments) are listed in full.
When an instrument is listed in parentheses, then this instrument is doubled. "guitar (=electric guitar)" means that the guitarist plays an acoustic, as well as an electric guitar. In an orchestral setting, "1(I=picc).2(II=corA).2(II=bcl).1" would resolve to: 1 flute (also playing piccolo), 2 oboes (second oboe also playing cor anglais), 2 clarinets (second clarinet also playing bass clarinet), 1 bassoon. If there is an extra instrument, which is not doubled, then this is expressly written out, e.g. "1(I=picc).2.corA.2.bcl.1.dbn", which unravels to: 1 flute (also playing piccolo), 2 oboes, 2 clarinets, 1 bass clarinet, 1 bassoon, 1 double bassoon.
Solo instruments in a concerto or chamber setting are written out in front of the ensemble instruments: guitar - 18.104.22.168 - 22.214.171.124 - perc - strgs.
Chorus and Guitar
Wicklow County Council under the Per Cent for Art Scheme funded by the Department of the Environment on behalf of Music Generation Wicklow, managed and produced by the Contemporary Music Centre
Bray, Co. Wicklow, Ireland, 22 March 2015: Children from St Cronans National School Bray, St Kevins National School Glendalough, St Laurences National School Greystones and Lacken National School Blessington with various musicians, Vincent Kennedy (cond.)