SBP 02 - Melodic Bacteria: Impact of Rock music on Growth, Motility and Biofilm formation of Microbes

Let’s start with a question. What if bacteria could groove to the beat of music? It Sounds absurd, right? But this question and curiosity to get the answer is the foundation of our project - an investigation into how music, especially rock music, impacts the lives and behaviour of microorganisms. While multiple studies on impact of environmental factors like temperature, pH, and nutrients have been successfully conducted and documented for their effects on bacterial behavior, the role of sound has remained kind of mystery. Though Impact of ultrasonic and infrasonic sound have been documented extensively, audible sound has rarely been studied. Our project aims to deep dive into this field, examining how music impacts bacteria affecting their growth, movement, and biofilm formation.

Why Study Sound and Microbes?
Microbes are present across diverse environments, constantly encounter natural and anthropogenic sound. Some of the microbes are in close association with humans, such as those in the oral, skin, gut microbiomes and especially ear microbes, are regularly exposed to music and environmental sounds. This study was conducted to study how rhythmic and frequency variations in music might alter microbial growth, motility, and biofilm-formation, offering insights into microbial adaptability to sound waves. Studying these parameters can help us to understand how sound waves affect microbial processes which have economic importance in industries like the dairy, fermentation and beverage industry.

The Study
Our study focused on three key bacterial characteristics: viability, motility, and biofilm formation and used Escherichia coli, Staphylococcus aureus, and Lactobacillus plantarum as our model organisms. We exposed bacterial cultures to rock music over certain time periods (2 hours and 3 hours 40 minutes precisely). The results were quite surprising as they were unexpected.  Bacteria showed reduced viability, showing the negative effect of sound waves on bacterial cellular processes and survival. However, Bacteria became highly active and motile showing almost as if the rhythmic energy of rock music inspired them to “dance.” Biofilm formation, a critical survival strategy, presented mixed results which were non conclusive. Almost all the bacteria show weak formation of biofilm.

Benefits of this project

This study serves as a bridge, filling the gap between art and science, bringing together two quite unrelated fields in a way that challenges conventional perception. It broadens the boundaries of microbiology, introducing audible sound as a potential new environmental factor that has capability to influence microbial life along with its behaviour. But why does this matter? This study has potential to provide important insights on both general microbiology and industrial applications of microbes. In addition to that, this study could contribute to more in-depth understanding of microbial ecology and role of non-chemical environmental stimuli on microbial behaviour, which may lead to the possibility of coding microorganism by different frequency of sound waves for human and industrial benefits (like in Dairy industry or water treatment industries) and better microbial management as well. sound has the potential to be non-invasive method of breaking down biofilms in medicine, which helps in the treatment of chronic infections. Similarly in biotechnology, controlled music exposure might improve fermentation processes or microbial productivity. Even in environmental science, sound could offer a new unique method to manage microbial ecosystems in water treatment or bioremediation efforts.

Door to endless possibilities

Our results also raise additional questions about how sound could impact other microorganisms or their cellular processes. Can acoustic energy alter gene expression? Can the frequencies of sound waves be adjusted such that it suppresses growth of harmful bacteria while promoting beneficial ones? The possibilities are as broad as they are intriguing.

Fundamentally speaking, this project is about curiosity. It reminds us that science doesn’t always have to be serious—it can be playful, creative, and even musical. Our question, “What happens when microbes meet music?” led to open a door to new perspectives and endless possibilities.