Alison Hammond lead the tributes as another member of the This Morning team said their goodbyes.
It is the third person to have left the ITV daytime programme in the last week.
It came as Alison and Dermot O'Leary hosted Friday's show and Alison said she was "devastated."
"Can I say something?" the 47-year-old presenter asked.
"Alan who does all the sound effects and the music and everything is actually leaving," Alison explained.
Dermot, 48, then replied: "Oh he's a genius. Where's he going?"
"I'm absolutely devastated," Alison added.
Giving a sad expression, the TV star went on: "Let's have some sound - because this is what he does."
As the downcast music from Our Tune played she told those watching the show: "He's leaving today. He's been an amazing member of staff here at This Morning.
"We just want to say: we love you, we'll miss you and you have been the best. Thank you, anyway."
"Thanks, Alan," Dermot chipped in as his co-star added: "You've been amazing."
Dermot then added: "If you do change your mind Alan, do come back here. I don't think wherever you're going to go will give you the artistic license to just press any buttons you want."
Last week Alison lead the farewells to another departing member of the This Morning team.
The ITV daytime show's host took to Instagram with a video as they celebrated at Sam Palmano's leaving do.
The clip showed the attendees - including Alison's pal and co-star Josie Gibson - getting involved in a viral TikTok trend to Beyonce track, Partition.
It came hours after Josie Gibson and Holly Willoughby also bid a farewell to another key team member on This Morning.
As a parting gift to floor manager Tim, who was leaving after decades working behind-the-scenes on the hit show, chef Phil Vickery whipped up a special crumble.
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