You've probably heard someone whistle while they work — but what about playing the trombone?
The musical moment was captured on video by Sam Watt from the Star Inn in Albert Street, who watched the performance going on opposite the pub. She said he played for over an hour on Thursday afternoon.
She tweeted the video and said "How fab, only in Huddersfield, well done Mr!"
She added: "It really made me giggle, what a great chap."
Questions abound — who is the mystery musician? Does he always take his trombone to work, or was it a special occasion?
And most importantly — does he take requests?
Do you recognise the man in the video? Let us know in the comments below!