▁is ▁also ▁a ▁composer : ▁He ▁has ▁written ▁several ▁pages ▁for ▁organ ▁alone ▁and ▁organ ▁with ▁ 4 ▁hands , ▁works ▁for ▁cho ir , ▁car illon , ▁or ▁various ▁form ations ▁of ▁chamber ▁music . ▁His ▁first ▁Su ite ▁à ▁quatre ▁main s ▁pour ▁l ' org ue ▁dans ▁le ▁style ▁français , ▁including ▁in ▁particular ▁a ▁third ▁in ▁size ▁entitled ▁Le ▁tom be au ▁de ▁Georges ▁Cz iff ra ▁was ▁published ▁by ▁La ▁S inf onie ▁d ' Or ph ée . ▁ ▁He ▁also ▁gives ▁numerous ▁lect ures ▁both ▁in ▁France ▁and ▁abroad , ▁for ▁associations , ▁for ▁the ▁C N RS , ▁or ▁at ▁international ▁con ferences ▁( Br uss els , ▁Paris , ▁Poland ). ▁As ▁a ▁music ologist , ▁his ▁articles ▁were ▁published ▁in ▁the ▁D iction naire ▁des ▁mus ici ens ▁du ▁XIXe ▁siècle , ▁the ▁en cyc lop edy ▁Die ▁Musik ▁in ▁Geschichte ▁und ▁Gegen wart , ▁and ▁in ▁collaboration ▁with ▁the ▁ ▁( Par is - S or bon ne ▁University ) ▁ ▁He ▁collabor ated ▁in ▁the ▁publication ▁of ▁fac sim ile ▁works ▁in ▁the ▁series ▁Pat r imoine ▁et ▁M ém oire ▁de ▁l ' org ue , ▁at ▁éditions ▁Music re print s ▁( works ▁by ▁Ben aut , ▁Min é , ▁D aus so igne - M é h ul , ▁Bat iste ). ▁He ▁is ▁secretary ▁of ▁the ▁C ava illé - Coll ▁Association . ▁ ▁Jean - L uc ▁Per rot ▁is ▁cheval ier ▁in ▁the ▁Ord re