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 momento 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.
This week's Milestone was brought to us by Sharon Treacy in Galway, with a real earworm of a tune which transports her back to a part-time job in McInerney's Supervalu back in 2012.
The company had just released their 'New Range' advert and with a stroke of genius used the song Hello from Martin Solveig and Dragonette. Seeing as she was working there every hour she could (to pay for college), her friends decided to sing it aloud any time it came on.
This is what the milestone is all about! Hope this doesn't make you wince Sharon...
You can listen to the chat 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