  A new line list for AlH is produced. The WYLLoT line list spans two
electronic states $X\,{}^1\Sigma^+$ and $A\,{}^1\Pi$. A diabatic model is used
to model the shallow potential energy curve of the $A\,{}^1\Pi$ state, which
has a strong pre-dissociative character with only two bound vibrational states.
Both potential energy curves are empirical and were obtained by fitting to
experimentally derived energies of the $X\,{}^1\Sigma^+$ and $A\,{}^1\Pi$
electronic states using the diatomic nuclear motion codes Level and Duo. High
temperature line lists plus partition functions and lifetimes for three
isotopologues $^{27}$AlH, $^{27}$AlD and $^{26}$AlH were generated using ab
initio dipole moments. The line lists cover both the $X$--$X$ and $A$--$X$
systems and are made available in electronic form at the CDS and ExoMol
databases.
