Ghosts of Reach except it's extremely somber

There'll Be Another Time...but it’s more tragic than before

Death of Harry but the nostalgia makes it even sadder than before

Epilogue but it's uplifting and bittersweet at the same time

We're The Desperate Measures except its more exhilarating than before

Ashes except the inevitable doom of Reach is heard in the background

Wake Me When You Need Me except it's kind of sad and nostalgic

Deference for Darkness except it's really depressing