Very upbeat for a blues song, listen to the midi at Public Domain Music. It is listed in the blues category by Tubb.
The oldest song with the phrase "I have got the blues? I think Washington Irving was the first to refer to the blues, 1807.

Lyr. Add: I Have Got the Blues Today

This world appear'd last night to me,
A very pleasant world to be.
Life was a rosy dream I vow.
It seems a horrid nightmare now!
Then I was gayest of the gay,
But I have got the blues today;
Then I was gayest of the gay,
But I have got the blues today.

Last night to Fannie, lovely maid!
I gave a charming serenade;
And ev'ry minute wished an hour,
That I might linger near her bow'r;
But little Fan has gone away,
And I have got the blues today;
But little Fan has gone away,
And I have got the blues today.

Last ev'ning seem'd a joyous time,
With Fannie, music friends and wine;
I and my gay companions laugh'd,
And sung, and flowing bowls we quaff'd;
I should not wonder much if they,
had got, like me the blues today;
I should not wonder much if they,
Had got, like me the blues today!

I wish that I had never been,
Or what has past, a fancy scene,
But more, oh! more than all I sigh,
That Fannie ever pleased mine eye;
Or that the charmer went away,
To leave me in the blues to day;
Or that the charmer went away,
To leave me in the blues to day!

By Sarah M. Graham. New York, Firth Pond and Co., 1850. Sheet music at The Levy Collection
Midi and lyrics at Public Domain Music (Error in last verse- or, not of): I Have Got the Blues