哀歌[aika] lament (song)
愛唱歌[aishouka] (one's) favourite song
詠歌[eika] poem (esp. tanka)
艶歌[enka] enka
応援歌[ouenka] rooters' song

歌い合う[utaiau] to sing responsively
歌い上げる[utaiageru] to sing at the top of one's voice
歌詠み[utayomi] tanka composer
歌会[utakai] poetry party or competition

仮装舞踏会[kasoubutoukai] masquerade ball
仮面舞踏会[kamenbutoukai] masquerade ball
足踏み[ashibumi] stepping
踏まえる[fumaeru] to be based on
踏み外す[fumihazusu] to miss one's footing

踏み固める[fumikatameru] to tread down
踏み荒す[fumiarasu] to trample down
踏み込む[fumikomu] to step into (e.g. someone else's territory)
踏み留まる[fumitodomaru] to stay on
踏出す[fumidasu] to step forward