  Results are presented from an ongoing study of the $\rho$ resonance. We use
the distillation approach in order to create correlator matrices involving
$\rho$ and $\pi\pi$ interpolators. The study is done in a centre-of-mass frame
and several moving frames. We are able to extract energy levels by solving the
GEVP of those correlator matrices. The initial exploratory study is being done
on a CLS 2-flavour lattice with a pion mass of $451$ $\mathrm{MeV}$ using
$\mathcal{O}(a)$ improved Wilson fermions. One aim of this work is to extract
the timelike pion form factor after applying the L\"uscher formalism. We also
plan to integrate this study with the existing Mainz programme for the
calculation of the hadronic vacuum polarization contribution to the muon $g-2$
and will extend our study to lower pion masses and larger lattices in the
future, including ensembles with $2+1$ flavours.
