heavy rotation (frequent usage)

heavy (in large amounts) / heavy (intense)

heaviness (large amounts) / heaviness (intensity)

radio / (slang, dated) broke, having no money; dining and dashing (punning off of 無線 (musen, “wireless”) with the sense of 無銭 (musen, “money-less”)) / radiation (when used as part of a compound)

(music) heavy metal

radio cassette, tape recorder

a transistor radio

radio control

song, melody, composition / bent, curve / to turn, to twist / crooked

a piece of music