Every Tuesday, we dedicate this segment to the songs that bring you right back to a very specific time in your life - first love, exams, moving out from home, backpacking around the world, nights out, nights in, going to college, bad jobs, falling in love, falling out of love, weddings and babies.
For coming on the show and sharing your Milestone Music Moment, we'll send you a lovely memento of your story. You will receive all the elements of the tale - the date, lyrics of the song and more, all on a beautifully finished poster for you to treasure.
On this morning's show, Niall Sargent from Leixlip, Co. Kildare told us his bitter sweet milestone moments, which are all connected to the same tune.
It all started in September of 2009 when Niall and his bride-to-be Mags flew to Malta for their wedding. There was one song which had them all bopping away beside the Mediterranean, and it had the same effect when they came back to have their 'Irish wedding' the following month.
Sadly Niall had some bad news in December of the same year, and the Black Eyed Peas were still there with I Gotta Feeling.
This is a multiple milestone which epitomises what it's all about. Lovely story Niall.
You can listen to the story in full by clicking play in the image above the headline.
If you've a milestone of your own, we'd love to hear all about it. Email your story to firstname.lastname@example.org