act n.
先生の授業からのパクリです。actには「〔ショーなどの〕芸能人、俳優、歌手」という名詞用法があるそうです。（白湯Inaho）
NHK announces lineup for 'Kohaku Uta Gassen' on New Year's Eve
NHK on Wednesday announced the lineup for its popular New Year’s Eve program “Kohaku Uta Gassen” (Red and White Song Contest). The contest is being held for the 65th year.
Of the 51 acts, three will be making their debut for the Red (women’s) team—HKT48, May J and veteran Hiroko Yakushimaru.
May J will sing the popular song “Let It Go” from the monster Disney hit “Frozen.”
