You might enjoy listening to many of our MIDIs. They have the accompaniment notes without the vocal. To do so, choose a song you like, click on its title, download the MIDI and play it.
It would be good to sing some of these songs yourself. Start the MIDI playing and go to the sheet music to follow along. Then sing your heart out.
“Don’t worry that it’s not good enough for anyone else to hear. Just sing, sing a song.” – Joe Paposo
