[hit] the airwaves

(of music, shows, etc.) begin broadcasting, typically through radio or television

The idiom "hit the airwaves" comes from the early days of radio broadcasting, where radio signals were transmitted through the air to reach a wide audience. It is used to signify the act of making something, such as information, news, or entertainment, available to the public through radio or, more broadly, through any form of broadcasting.

The breaking news story hit the airwaves, reaching millions of listeners within minutes.
"Their new album will hit the airwaves next week, and fans are eagerly awaiting its release.
The radio talk show host is known for her witty commentary that hits the airwaves every morning.
Political candidates often use radio ads to hit the airwaves and promote their campaigns.
The company's advertising campaign will hit the airwaves during prime time, targeting a broad audience.