Skilled immigration is basically impossible
First of all, a 2-year junior college does not meet the basic requirements for immigration. Even if it is a three-year program, there are many conditions that will block you. For example, the latest immigration policy of the Immigration Bureau shows that there is no long-term shortage in the industry related to music. The only thing that is relevant is early education. This requires your husband to go to New Zealand to study for a level 7 early education diploma and register with the New Zealand Teachers Association! Therefore, tuition fees and IELTS scores (you can enroll in language courses without IELTS scores) have become a series of issues.
Secondly, aside from the fact that 2-year junior colleges do not meet the basic immigration requirements, it is difficult to find a job in music education because the English requirements involved in music education are very high, unless your husband speaks English very well. However, there are very few music education job opportunities in New Zealand.
It is recommended that if you want to immigrate to New Zealand, you should go to school. Otherwise, you can invest in Canada (800,000).