nope... I'm not worried. As hard as it is to get someone to listen to the music, I don't think I need to fear someone thinking what I write is worth stealing. Kinda wish they would....
If you fear this... copyright your music with the LOC and sleep soundly at night. It's only $45 and can be done on line in a few minutes.
we all hear about the big lawsuits .... George Harrison and My Sweet Lord, for example..... but more recently in country music.... Lady A did a song called Need You Now.... it's almost a dead ringer for Alan Parsons Eye In The Sky..... but no lawsuits have been filed.
At some point..... with the Western scale, and 7 chords.... plus minors and variations..... with as many song writers and songs that have been written.... the odds are pretty good that someone, somewhere, will hit the exact, or almost exact progression and melody that someone else has come up with...and will have never heard the other version.
This happened to me. It was a gospel song on a radio station, and the song was musically, a near perfect match to one I had written. My jaw dropped when I heard it. BUT.... there was no way that writer had heard my song, nor me his..... so it was a simple coincidence. BTW: the song was not a hit.... it just got some local airplay on a back woods gospel station. Things like that do happen. Unless there is a connection between the writers, a case like that would likely be thrown out of court.
This is the reason publishers and artists do not accept un-solicited material.