N5YouTube

(はい)っていることを()(かえ)強調(きょうちょう)し、拍手(はくしゅ)()()がる様子(ようす)表現(ひょうげん)している。

The content emphasizes the repeated phrase 'it's in' and expresses excitement with applause.
3 words
(はい)ってる(はい)ってる

(はい)って

N4
v5r, vi
to enter; to come in; to go in; to get in; to arrive
v5r, vi
to join (a club, company, etc.); to enter (a university, the army, etc.); to enroll (in); to go into (e.g. politics); to get into

N5
[拍手(はくしゅ)]

(はく)(しゅ)

N4
n, vs, vi
clapping hands; applause
n
clapping one's hands in prayer (at a shrine)