Researching Viggiano family of Marsicovetere

Hello,
We are researching our Viggiano family roots in Marsicovetere.
Joe Viggiano, played the harp, Charley (his brother) played violin and they had a sister Katie. Their mother was Rosa Pascale.
They emigrated to West Virginia in the USA about 1890-1900. Looking for their emigration date; church in Marsicovetere or any Viggiano's in that town.

We have Joe's harp and we are also trying to find out if it was brought with him from Italy (Italian made) or if the origin is in the USA.
Thank you for any help in our quest.

Donna Negri