This post demonstrates the confusion created by a lack of standardized terminology on this topic (I posted a whole thread on this awhile back). Music technology, music business, music industry, audio engineering, composition and improvisation and many other terms are used in these links. Studio production is another one.
I would ask if your son is primarily a creative person (composing, sound design) or a technical person (audio engineering, studio production).
Though many in the EDM world are incredibly creative so don’t mean to create a false dichotomy here. As with art, technology and creative musicianship are intersecting in all kinds of cool ways.
In the contemporary classical world, music technology means something else entirely and includes electroacoustic and acousmatic works. Installations involve sound design and technical approaches to having loops that play over and over again while visitors come and go.
Your post points toward more commercial interests and a possible major and career path, and all these programs seem to provide an overview of several of these ill-defined fields. The NYU one seems more on the creative side, but I could be wrong.
I would check with schools that are mentioned in threads here on music technology (Spirit Manager listed a whole bunch of them on another thread) for summer programs.
Oberlin has a Sonic Arts program https://www.oberlin.edu/summer-programs/sonic-arts-workshop and the undergrad TIMARA program. Brown has an undergrad MEME program. Michigan has PAT. People have mentioned College of St. Rose, UMass Lowell, Northeastern, William Paterson, and many others.
Ithaca has an undergrad program, summer is performance with some time doing sound recording technology- yet another term to further confuse things!
Berklee has Music Business, Music Production workshops in the summer and a weekend Electronic Music Production and Sound Design workshop.
Hartt at U. of Hartford has Music Industry which involves production. http://www.hartford.edu/hcd/music/summer-music/music-industry.aspx
For another view of the field https://camd.northeastern.edu/music/
Lots of other options- I’ll stop there 