UNITED NEWS INTERNATIONAL (UNI) — Singing isn’t always a good idea.

Take, for example, an incident that happened this week in London.

Mike Coupe, CEO of J Sainsbury, appeared on British channel ITV News to talk about a £12-billion merger with Asda.

In between interviews, he sang, “We’re in the money, the sky is sunny, let’s send it, lend it, spend it, send it rolling along.”

Coupe appeared to not realize the cameras were rolling. The song he chose is from the Broadway musical, 42nd Street.

The Sainsbury-Asda deal is expected to create the U.K.’s biggest supermarket chain.

Coupe’s own shares in Sainsbury stand to increase in value by £600,000.

Netizens expressed their outrage over the clip released by ITV News, criticizing the merger for its potential to slash jobs.

Coupe later apologized for his musical faux pas and choice in song saying, “This was an unguarded moment trying to compose myself before a TV interview.”