The Vareity U B The Sideman Collection is a great choice for practice and enjoyment.
It's getting harder to find country bands to play with, and even harder to find band's who will play the classic country hits contained in this series. Just listen to the audio tour to hear a dozen random samples of the sound quality of the vocalist and the tracks. 
There is an identifiable intro and turnaround to play along with on each song, and the verses and chorus are left completely open for your backing pleasure.
Vocals by Tony Martin. / Music by live studio musicians.