I sing in church and need quality...

[Phillyfanatic]

Let me preface this by stating that I don't sing in noisy bars...I sing in church. I need a program that will lower the pitch or the key for some of my songs. Is there a good program that produces a good quality replication of my music in lower keys or lower pitches? I can't have a wobble or reduction in the quality of my background music. Let me know what you think will work for me...I am new to this concept of changing key or pitch but I am sure this will work for me. Thanx.