▁served ▁as ▁chairman ▁in ▁the ▁Music ▁Department ▁there ▁and ▁founded ▁a ▁composition ▁department . ▁ ▁His ▁notable ▁students ▁have ▁included ▁Ah aron ▁Raz el , ▁Gil ▁Sh oh at , ▁Y on atan ▁Raz el , ▁Y oni ▁Re chter , ▁Matt i ▁K ov ler ▁and ▁Mat an ▁Por at . ▁ ▁H aj du ▁composed ▁many ▁ped agog ical ▁works , ▁particularly ▁for ▁piano ▁and ▁theory ▁through ▁a ▁cre ative ▁approach ▁( in vol ving ▁the ▁player ▁to ▁the ▁process ▁of ▁compos ing ) ▁e . g . ▁Mil ky ▁Way , ▁Art ▁of ▁P iano - play ing , ▁Book ▁of ▁Ch alleng es , ▁Con cer to ▁for ▁ 1 0 ▁young ▁pian ists . ▁ ▁All ▁this ▁is ▁connected ▁with ▁the ▁practice ▁of ▁cre ative ▁teaching ▁in ▁the ▁Israel ▁Arts ▁& ▁Science ▁Academy ▁in ▁Jerusalem , ▁an ▁experimental ▁school ▁for ▁a ▁new ▁approach ▁to ▁music ▁teaching . ▁ ▁He ▁also ▁studied ▁Jewish ▁Kle z mer ▁and ▁Hass id ic ▁re pert ories ▁and ▁published ▁several ▁articles ▁on ▁this ▁subject . ▁ ▁He ▁was ▁deeply ▁involved ▁in ▁Jewish ▁topics , ▁not ▁only ▁on ▁the ▁usual ▁folk lor istic ▁or ▁lit urg ical ▁levels , ▁but ▁also ▁confront ed ▁more ▁abstract ▁subjects ▁of ▁Jewish ▁thought ▁( O ral ▁Law , ▁philosoph ical ▁books ▁of ▁the ▁Bible ) ▁as ▁well ▁as ▁Jewish ▁History . ▁In ▁ 2 0 0 5 ▁he ▁received ▁the ▁title ▁of ▁Doctor ▁Honor is ▁C aus a ▁of ▁Jerusalem ▁Heb rew ▁University . ▁▁ ▁H aj du