  The QCD string model is employed to evaluate the masses of orbitally and
radially excited heavy-light mesons and lightest hybrids in the spectrum of
charmonium and bottomonium. The number of parameters of the model is reduced to
only seven which are the string tension, the two values of the strong coupling
constant (one for heavy-light and $\bar{c}c$ mesons and one for $\bar{b}b$
mesons), and the four overall spectrum shift constants which depend on the
quark contents of the particular meson or hybrid family. A few well-established
states in the spectrum of heavy-light and heavy-heavy mesons are used to fix
these parameters, and then the masses of other mesons and hybrids come out as
predictions of the model which are confronted with the existing experimental
data, and a few suggestions are made concerning yet not measured quantum
numbers of some states in the spectrum of charmonium and bottomonium.
