  Since 2003 many new hadrons, including the lowest-lying positive-parity
charm-strange mesons ${D_{s0}^*(2317)}$ and ${D_{s1}(2460)}$, were observed
that do not conform with quark model expectations. It was recently demonstrated
that various puzzles in the charm meson spectrum find a natural resolution, if
the SU(3) multiplets for the lightest scalar and axial-vector states, amongst
them the ${D_{s0}^*(2317)}$ and the ${D_{s1}(2460)}$, owe their existence to
the nonperturbative dynamics of Goldstone-Boson scattering off $D_{(s)}$ and
$D^*_{(s)}$ mesons. Most importantly the ordering of the lightest strange and
nonstrange scalars becomes natural. In this work we demonstrate for the first
time that this mechanism is strongly supported by the recent high quality data
on the ${B^-\to D^+\pi^-\pi^- }$ provided by the LHCb experiment. This implies
that the lowest quark-model positive-parity charm mesons, together with their
bottom counterparts, if realized in nature, do not form the ground-state
multiplet. This is similar to the pattern that has been established for the
scalar mesons made from light up, down and strange quarks, where the lowest
multiplet is considered to be made of states not described by the quark model.
In a broader view, the hadron spectrum must be viewed as more than a collection
of quark model states.
