Im_Band_Trash got that one. It was Under The Bridge by Red Hot Chilli Peppers.

The next song is,

  I wish somebody would have told me, babe
Someday, these will be the ____ ___ ____
All the love you won't forget
And all these reckless nights you won't regret
Someday soon, your whole life's gonna change
You'll miss the magic of these ____ ___ ____

[Macklemore:]
I was thinkin' 'bout the band
I was thinkin' 'bout the fans
We were underground
Loadin' merch in that 12-passenger van
In a small club in Minnesota
And the snow outside of 1st Ave
I just wanted my name in a star
Now look at where we at
Still growin' up, still growin' up
I would lay in my bed and dream about what I'd become
Couldn't wait to get older, couldn't wait to be some
Now that I'm here, wishing I was still young
Those ____ ___ ____
[Kesha:]
I wish somebody would have told me, babe
That someday, these will be the ____ ___ ____
All the love you won't forget
And all these reckless nights you won't regret
'Cause someday soon, your whole life's gonna change
You'll miss the magic of the ____ ___ ____

[Macklemore:]
Wish I didn't think I had the answers
Wish I didn't drink all of that glass first
Wish I made it to homecoming
Got up the courage to ask her
Wish I would've gotten out of my shell
Wish I put the bottle back on that shelf
Wish I wouldn't have worry about what other people thought
And felt comfortable in myself
Rooftop open, and the stars above
Moment frozen, sneakin' out, and fallin' in love
Me, you and that futon, we'd just begun
On the grass dreamin', figuring out who I was
Those ____ ___ ____