I wandered lonely as a cloud is a setting of a poem by William Wordsworth and is scored for SSAA but can be performed by TTBB, sounding an octave lower, or by the combination of both: tenors (8vb) doubling the sopranos and basses (8vb) doubling the altos.  The S.1 part may be performed by a soloist.

I wandered lonely as a cloud
that floats on high o'er vales and hills,
when all at once I saw a crowd,
a host of golden daffodils;
beside the lake, beneath the trees,
fluttering and dancing in the breeze.
The waves beside them danced; but they
out-did the sparkling waves in glee;
a poet could not but be gay,
in such a jocund company:
I gazed—and gazed—but little thought
what wealth the show to me had brought.
For oft, when on my couch I lie
In vacant or in pensive mood,
they flash upon that inward eye
which is the bliss of solitude;
and then my heart with pleasure fills,
and dances with the daffodils.

William Wordsworth