If there is a phrase that needs work, the best way to correct any flaws is by repetition... I would suggest that if you have any festivals going on near you or fiddle contests you make an effort to attend and he will get to learn new tunes, and get positive support from others who have interest, talent and enthusiasm./ The best part of these gatherings is the jamming before and after the performances on stage.. in the parking lot, camp ground or what have you.. Sometimes his friends may not understand if they have other pass times-sports and such. Hopefully they are understanding and supportive, but 10 year old boys are not famous for being such...where are you located--perhaps other mud catters can make suggestions--glad you found this list. I played classical orchestra violin for many years before I discovered I could have been playing fiddle all that time and loving it more... there are many different genre of music-- bluegrass, old-timey, folk--I hope he is enjoying the music he is playing and if he can make a tune his own by improvising and adding his own touches that is really the best part of it all. Happy playing to him' and happy listening to you! Those squeaks will go away soon! Laurel