Screenshot from the YouTube channel nelsontyc.com
If you never heard of otamatones, they are funny looking electronic instruments from Japan.
Nelson Tan Yan Cong is a Singaporean artist who published a new otamatone cover every single week for the past two years on his YouTube channel and if you don't know him yet, I'd recommend checking some of his stuff out! He covered a bunch of video games theme songs and other great hits for example.
This time he's back with a Christmassy cover of the well known song Jingle Bell Rock!