Harmonica Selection

Hello,

I am a large fan of Russian Choral Music and Classical Music. Having failed to play either of these with much competence on my violin, I have endeavored to play these on the harmonica!

The only problem is, being new to the harmonica, I do not know which key of harmonica I should get to play these types of music. If absolutely necessary, I can get a separate harp for each style, but would like to just have one all-round harp.

The songs that I would like to learn include: Tachanka, Ode to Joy, Katyusha, etc.

I found Ode to Joy on Harptabs.com in the key of C