can you describe that 'playing' object you mentioned?
It is a bowed string musical instrument, most often a violin.
Fiddle
 is a bowed string musical instrument, most often a violin.
what is 'donegal fiddle tradition' all about? It is the way of playing the fiddle that is traditional in County Donegal, Ireland.
wiki:7738117
Fiddle [SEP] Introduction
A fiddle is a bowed string musical instrument, most often a violin. It is a colloquial term for the violin, used by players in all genres including classical music. Although violins and fiddles are essentially synonymous, the style of the music played may determine specific construction differences between fiddles and classical violins. For example, fiddles may optionally be set up with a bridge with a flatter arch to reduce the range of bow-arm motion needed for techniques such as the double shuffle, a form of bariolage involving rapid alternation between pairs of adjacent strings. To produce a "brighter" tone, compared to the deeper tones of gut or synthetic core strings, fiddlers often use steel strings.