This is an opinion question. so based off of what you learned and come up with your own opinion.
a piece of music sung or played in the open air, typically by a man at night under the window of his lover.
In music, a serenade is a musical composition and/or performance delivered in honor. Serenades are typically calm, light pieces of music. The term comes from the Italian word serenata, which itself derives from the Latin word serenus.
Neurons communicate with each other via electrical events called 'action potentials' and chemical neurotransmitters. At the junction between two neurons (synapse), an action potential causes neuron A to release a chemical neurotransmitter.