Board Thread:Utaite Talk/@comment-86.186.108.144-20150421140824

I'm trying to figure out who this utaite is, cause the voice is just awesome, But the video I have watched that they are in is a youtube utaite BGM titled "【歌い手】　【作業用BGM】　俺得 " by a youtuber named Izumo mimon, and it only says the names of songs not utaite...so I was wondering does anybody know the name of the second song's singer? 