  Within QCD, colourless states may be constructed corresponding to exotic
matter outside of the traditional quark model. Experiments have recently
observed tetraquark and pentaquark states, but no definitive hybrid meson
signals have been observed. With the construction of the PANDA experiment at
FAIR, and with full commissioning of the GlueX experiment at JLab expected to
be completed this year, the opportunity for the observation of hybrid mesons
has greatly increased. However, theoretical calculations are necessary to
ascertain the identity of any experimental resonances that may be observed. We
present selected QCD sum rule results from a full range of quantum numbers for
open-flavour hybrid mesons with heavy valence quark content, including
non-perturbative condensate contributions up to six-dimensions.
