This Karaoke version can be used for students to take on the role of the 'sick' boy. His mother's voice can still be heard.
The video includes all kanji and hiragana lyrics and is an excellent way to consolidate literacy in a fun way. Students especially pretending to be this sad boy and find the language easy because of the slow pace of the song.
Download the audio and use it as a backing track for your students to either sing the original lyrics or create their new unique verses so that they can invent their own original ailments.