She does do many other songs, but these were the only two she has recorded that fall into the genres appropriate for that site.
She sings, but has not yet recorded, songs like House of the Rising sun Power of love Black Velvet First Cut is the Deepest Take it to the limit Blanket on the ground
The Summertime accompaniment is actually a professional MIDI backing track. As we don't have a band, we are restricted to the songs for which we can get suitable tracks. I wouldn't even consider making my own!
The CD (just a CD_R) from which the songs were taken includes That Ole devil called love Don't it make my brown eyes blue & a couple of Dusty Springfield songs.