Affordable colleges for international students

In some cases yes (Oberlin, Lawrence - do check though as there might be exceptions like “music minor added to whatever major”) but generally not so. The other Universities I listed want excellent musicians who major in something else (math and science are popular for musicians at these colleges). I’m thinking Gustavus Adolphus might also have music scholarships for non music majors. Look at their websites.
Since you’re a " recognized" musician, if the deadlines have passed (some may have been dec 15) say your music teachers recommended you inquire about your applying to the college and auditioning for scholarships, not realizing the deadlines because in tour country it’s much later; list your academic and music credentials; ask if you can still send a recording for consideration.