You are free to play each solo part yourself! The software comes complete with 7,500 scores encompassing every level from easy to challenging!
On the rare occasion when there is no capella score readily available for a specific piece of music, you can transform any sheet music into a capella score using capella-scan (not included)!
You can also do the opposite: Create a CD (you can also do this for other members of the choir) on which your own voice is stressed while the volume of the other voices is reduced. Once you are sure that you have mastered your part, switch over to capella playAlong and reduce the volume of your part until it is very quiet compared with the other voices. Do this until you can remove your voice altogether. The next time you arrive for choir/orchestra practice, you'll be assured of admiring applause!