  In this note we discuss features of the simplest spinning Discrete Series
Unitary Irreducible Representations (UIR) of SO(1,4). These representations are
known to be realised in the single particle Hilbert space of a free gauge field
propagating in a four dimensional fixed de Sitter background. They showcase
distinct features as compared to the more common Principal Series realised by
heavy fields. Upon computing the $1-$loop Sphere path integral we show that the
\emph{edge modes} of the theory can be understood in terms of a Discrete Series
of SO$(1,2)$. We then canonically quantise the theory and show how group theory
constrains the mode decomposition. We further clarify the role played by the
second SO(4) Casimir in the single particle Hilbert space of the theory.
