“The strongest and sweetest songs yet remain to be sung.”

Song Sung Blue
Song lyrics, Moods (1972)

The Sword Sung
1790s, Poems from Blake's Notebook (c. 1791-1792)

Statement to the court prior to his sentencing for contempt of Congress (1961); also quoted on NPR: Weekend Edition (2 July 2005)
Context: A good song can only do good, and I am proud of the songs I have sung. I hope to be able to continue singing these songs for all who want to listen, Republicans, Democrats, and independents.

Zaśpiewałaś tą piosenkę, jakby uderzył w nią autobus.
To Idol contestants

What It Means to Be a Poet in America (1926)
Context: I have sung my songs to my own tunes for most of the English departments of the state universities of the forty-eight states of the nation, and the English departments of other universities and colleges; and I have been recalled to many of these seven and eight times, which matters are a source of great pride to me. And I have brought out three books where the songs were based on my own pen-and-ink pictures.

My Triumph, reported in Bartlett's Familiar Quotations, 10th ed. (1919)
Context: Sweeter than any sung
My songs that found no tongue;
Nobler than any fact
My wish that failed of act.

Others shall sing the song,
Others shall right the wrong,—
Finish what I begin,
And all I fail of win.

An anthem for the queenliest dead that ever died so young —
A dirge for her the doubly dead in that she died so young.
"Lenore", st. 1 (1831).

Song lyrics, Planet Waves (1974), Forever Young
Context: May your hands always be busy. May your feet always be swift. May you have a strong foundation when the winds of changes shift. May your heart always be joyful. May your song always be sung. May you stay forever young.

Monsoon
Escapology (2002)