noun
request hour (radio)
A time slot on radio or TV where listeners request songs. Common in Japanese broadcasting.
毎週金曜の夜はリクエストアワーです。
Every Friday night is request hour.
noun
fan-voted idol event
An event where fans vote for songs to be performed by an idol group, often used by AKB48 and similar groups.
AKB48のリクエストアワーで、ファンが選んだ曲が披露された。
At AKB48's request hour, the songs chosen by fans were performed.