Answer: leadin

AnswerCrossword Clue
LEADINWire on a radio.
LEADINShow immediately preceding another
LEADINCommercial preceder
LEADINOpening bars
LEADINEscort through the door
LEADINEscort from the door
LEADINPrelim
LEADINStart of a segue
LEADINSegue
LEADINAdman's attention-getter
LEADINRadio wire.
LEADINIntroduction
LEADINWire from aerial to transmitter.
LEADINAntenna wire.
LEADINUsher
LEADINOpener
LEADINPrologue
LEADINOpening
LEADIN"And now," e.g.
LEADINIntro
LEADINShow the way