To respond to Joe Goss' comment about Ballistol use on bass string. I DO NOT recommend using Ballistol on bass strings. Any oil, or any other product for that matter, can dull the sound of bass strings. Also, it will dissolve the copper tarnish on the bass strings and will transfer the blue copper salts to the dampers. My recommendation was to use it on rusty steel strings, not bass strings. Sorry for any confusion there. Doug Gregg Classic Piano Doc
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