Final answer:
The main themes of the videos were the intersection between music and medicine and the use of technology to print your own medicine.
Step-by-step explanation:
The main themes of the videos about 'healing medicine' were the intersection between music and medicine and the use of technology to print your own medicine.
One of the videos, titled 'Between music and medicine', was created by Robert Gupta. This video explored the power of music to heal and shared a personal story about the impact of music on a patient.
Another video, titled 'Print Your Own Medicine', was presented by Lee Cronin at TED Global 2012. In this video, Cronin discussed the possibilities of 3D printing technology in manufacturing customized medicines.