Catch Exception from Artist::__construct().
Catch Exception from Artist::__construct().

This should resolve issue #246, though a more thorough analysis of why
the artist isn't found in that case would be nice.

foocorp/gnu-fm,foocorp/gnu-fm,foocorp/gnu-fm,foocorp/gnu-fm,foocorp/gnu-fm,foocorp/gnu-fm,foocorp/gnu-fm,foocorp/gnu-fm,foocorp/gnu-fm