アップビート

noun

upbeat

Refers to an unaccented beat in music, especially the last beat of a measure leading into the downbeat. Also used metaphorically for a cheerful, optimistic mood.

• 指し揮き者しゃはアップビートで演えん奏そうを始はじめた。

  The conductor started the performance on the upbeat.

• 彼かの女じょのアップビートな性せい格かくが周まわりを明あかるくする。

  Her upbeat personality brightens up those around her.