**caution.. pedant alert**:

it is 'officially' spelled 'Dalbergia' and Khaya is accepted as a 'true Mahogany'....that is, from the same family, if different genus. (Sometimes VERY similar woods get different names...such as Grevillia robusta and Cardwellia sublimis (Southern & Northern Silky Oak in Australia)

**end pedant alert** (except that Cocobolo is still quite available to woodturners...I see a lot of it, though I am not a customer.)

As to pianos...wood for musical instruments is cut at different angles especially for certain sound qualities. The wood in a piano may or may not be cut along the grain optimally for a guitar. It is probably quite usable, and IF the piano is no longer usable as a piano, it might make some nice stock...but enquiries to some experienced luthiers could help decide how to proceed. Remember..veneers were common on many pianos.....one needs to know exactly what is there.