Hi,

There is a song George and Ira Gershwin for, "The Goldwyn Follies", 1938. It is titled, "I Was Doing All Right". It repeats the line with in the lyric, "I was doing all right", however, it does not have the line "minding my own business".

Refrain starts:

I was doing all right-
Nothing but rainbows in my sky;
I was doing all right
Till you came by

If you think that this may be the song, introduced by Ella Logan, please reply and let me know, as I do have the complete lyric.

Hope that this helps.