The mother reveals how she met Ted and what she has been doing over the past eight years.
La Vie En Rose (From "How I Met Your Mother: Season 9") — Cristin Milioti
The Mother sits on the patio & begins playing the ukulele and singing this song while a montage of what the other characters are up to flashes by. Ted is listening to her sing on the patio next door.
Beginning of the episode when Barney & Ted are playing their "Have you met Ted?" game at MacLaren's when The Mother's friend receives a call from her that she's at the other MacLaren's.