From my personal favorite concert in Central Park, Paul Simon and Art Garfunkel singing Old Friends. The vocals are just amazing.

Someone requested the lyrics, so here they are:

OLD FRIENDS LYRICS:

Old friends,
Old friends
Sat on their park bench
Like bookends.
A newspaper blown though the grass
Falls on the round toes
Of the high shoes
Of the old friends.

Old friends,
Winter companions,
The old men
Lost in their overcoats,
Waiting for the sunset.
The sounds of the city,
Sifting through trees,
Settle like dust
On the shoulders
Of the old friends.

Can you imagine us
Years from today,
Sharing a park bench quietly?
How terribly strange
To be seventy.
Old friends,
Memory brushes the same years
Silently sharing the same fears

BOOKENDS LYRICS:

Time it was and what a time it was it was,
A time of innocence a time of confidences.

Long ago it must be, I have a photograph
Preserve your memories, theyre all thats left you

59TH STREET BRIDGE SONG (FEELIN' GROOVY) LYRICS:

Slow down, you move too fast.
You got to make the morning last.
Just kicking down the cobble stones.
Looking for fun and feelin' groovy.

Ba da, Ba da, Ba da, Ba da...Feelin' Groovy.

Hello lamp-post,
What cha knowin'?
I've come to watch your flowers growin'.
Ain't cha got no rhymes for me?
Doot-in' doo-doo,
Feelin' groovy.

I've got no deeds to do,
No promises to keep.
I'm dappled and drowsy and ready to sleep.
Let the morning time drop all its petals on me.
Life, I love you,
All is groovy. (less info)