When Sam moved back to New York (not coincidentally the day Blaine called him in tears over a big fight and break up with Kurt), they needed to find an apartment and fast, so they wound up moving into a run-down little place over a small used records store. Sure, the heating wasn't great, but they had running water, electricity and it was pretty clean.
Plus, they got to listen to the awesome music that drifted up from the store below. As Blaine recovered from his broken heart, he joined Sam more and more often in singing and playing along and soon the owner offered them a space to play in the store.
It wasn't a paying gig and they only played when Sam wasn't working and Blaine wasn't in school, but sometimes customers tossed a bit of money into Sam's guitar case…at least until the day a music producer happened upon one of their sets.
They celebrated signing a record contract with a bottle champagne in their little apartment and shared their first kiss as they danced around living room to the sounds of Peaceful Easy Feeling by the Eagles.
A few years later, they danced to that same song at their wedding.