  We analyze the dynamics of D2-branes on SU(2) within a recently proposed
matrix model, which works for finite radius of SU(2). The spectrum of
single-brane excitations turns out to be free of tachyonic modes. It is similar
to the spectrum found using DBI and CFT calculations, however the triplet of
rotational zero modes is missing. This is attributed to a naive treatment of
the quantum symmetries of the model. The mass of the lightest states connecting
two different branes is also calculated, and found to be proportional to the
arc length for small angles.
