Are you more interested in studying the aspects of teaching (ie. methods of presenting concepts) or in how the students either learn or remember/recall the information. I do think both studying how memory improves using songs, and developing fun songs for specific topics, is a worthwhile type of project for Biology education.
@Robert John Wolff: ...studying how memory improves using songs, and developing fun songs for specific topics, is a worthwhile type of project for Biology education.
This is an excellent suggestion. One might add that memory improvement might result more or less, depending on the type of music that students listen to. It is well-known that there are repeated motifs in classical music. Memory might be improved by learning to recognize and anticipate those motifs while listening to a concert piece with the fading in and out of different instruments during a symphony or recognizing what is repeated during a Chopin piano piece or during a violin concerto.
Another idea is presenting a difficult lecture/concept to different classes with different methods to see which students are more able to grasp and then describe the idea accurately. I would use a deep meditative class session vs the usual lecture method.