ic ▁music ▁is ▁made ▁with ▁electronic ▁technology , ▁specifically ▁a ▁device ▁– ▁usually ▁a ▁loud spe aker ▁– ▁that ▁trans du ces ▁elect rical ▁energy ▁to ▁ac oust ic ▁energy . ▁ ▁Circ uit ▁b ending ▁ ▁Circ uit ▁b ending ▁is ▁the ▁cre ative ▁short - circ uit ing ▁of ▁low ▁voltage , ▁battery - power ed ▁electronic ▁audio ▁devices ▁such ▁as ▁guitar ▁effects , ▁children ' s ▁to ys ▁and ▁small ▁synth es izers ▁to ▁create ▁new ▁musical ▁instruments ▁and ▁sound ▁gener ators . ▁ ▁Em phas izing ▁sp ont ane ity ▁and ▁random ness , ▁the ▁techniques ▁of ▁circuit ▁b ending ▁have ▁been ▁commonly ▁associated ▁with ▁noise ▁music , ▁though ▁many ▁more ▁conventional ▁contemporary ▁mus icians ▁and ▁musical ▁groups ▁have ▁been ▁known ▁to ▁experiment ▁with ▁" b ent " ▁instruments ▁. ▁ ▁Ex amples ▁of ▁notable ▁electro ac oust ic ▁works ▁ ▁Mil ton ▁B abb itt ▁– ▁Phil om el ▁( 1 9 6 4 ) ▁ ▁Else ▁Marie ▁P ade ▁– ▁Sym ph onie ▁Magn ét oph on ique ▁( 1 9 5 8 ) ▁ ▁Juan ▁A men á bar ▁– ▁Los ▁pec es ▁( 1 9 5 7 ) ▁ ▁Luci ano ▁Ber io ▁– ▁Th ema ▁( Om aggio ▁a ▁Joy ce ) ▁( 1 9 5 8 – 5 9 ) ▁ ▁Johann a ▁Bey er ▁– ▁Music ▁of ▁the ▁S pher es ▁( 1 9 3 8 ) ▁ ▁Kon rad ▁Bo eh mer ▁– ▁As pe kt ▁( 1 9 6 4