Both require that you pour your whole life into it. Both require you to do it for free (in the form of either mixtapes or volunteering) until you can convince a major label/NGO to pay for your efforts. Both have a powerful effect on the larger world and change the lives of many. Both demand hard work, sometimes in difficult circumstances.
Neither is necessarily a well-respected career choice. Neither guarantees stable progression. Neither can be done halfway. Neither requires formal accreditations, although they can be helpful. Neither will let you stay where you are forever.
Both draw people who wouldn’t want to do anything else. Both require heart.