UC’s only use grades from the a-g courses taken 10-11th grades for their GPA calculation. It does not matter how your HS weights or does not weight your classes you go by how the UC’s look at your transcript. Since you did not take a year of either Art or Music, you do not meet the requirements so it will probably be a waste of an application fee. Not sure what you are referring to as other grades? Freshman grades are reviewed to make sure you pass the a-g courses but not included in the GPA calculation. UC’s only recognize AP/IB or dual enrollment classes for the extra honors points for their GPA calculation if you are out of state. A 3.8 is still below the 25th percentile for these schools so they should be considered a Reach. If you have some solid Match and Safety schools on your list, then apply uf you want.
http://admission.universityofcalifornia.edu/freshman/requirements/a-g-requirements/index.html