「有鑒於暢銷歌（流行歌）可以捕捉人心及反映社會樣貌等特質，本文分析新冠疫情流行爆發前後登上「紅白歌唱大賽」之日本流行歌計294曲的歌詞，除討論先行研究成果外，並比較新冠爆發前（2017～2019年）及後（2020～2022年）兩個時期的歌詞異同。結果得知兩時期之流行歌歌詞在詞類、語種、文字種（表記）的分布上無太大差異，但新冠流行期間難度極高的曲數增加，兩時期常用詞在【戀愛】、【人稱】、【正面（詞）】範疇內占比差異較大。【戀愛】範疇常用詞詞數遠低於先行研究成果中抽出之常用詞，且疫情期間使用次數不高，顯示疫情期間情歌流行狀況不若平時。而屬【正面（詞）】範疇的常用詞均以疫情期間使用占比較高，顯示該時期偏好鼓舞人心的正面歌曲。上述研究成果反映疫情期間的日本面向，可充實「日本事情」等日語教育的內涵。」

This study surveyed the differences in the word usage of the 294
popular Japanese songs performed in the ࠕ Kōhaku Uta Gassen ( ⣚ⓑḷྜ
ᡓ )ࠖ over the past six years, since the popular songs can capture
people's minds and reflect social conditions. This study discussed the
previous literature works and compared the differences for the words used
in the songs performed in the pre- (2017-2019) an d pandemic (2020 -2022)
periods. There is no apparent difference between the songs performed
before and after the outbreak of the pandemic in the distributions of part
of speech,type of language,labels. However, compared with the pre-
pandemic period, the songs during the pandemic had more songs of
increased difficulty, higher differences in fractions of the words used in
ࠕLoveࠖ ,ࠕ personal pronounࠖ ,ࠕpositiveࠖ aspects, and much less common
words in the ࠕLoveࠖ aspect than those extracted from previous literature.
These observations suggest that love songs are not as popular in pandemic
period as those in pre-pandemic period. The words in the ࠕ positiveࠖ
aspect were relatively high in usage during the pandemic, suggesting the
preference to have frontal songs to inspires people in the pandemic. The
above results should be a good reference to Japanese language courses
such as "Japanese affairs", and others