Exotic spectroscopy in a diquark model with a little help from AdS/QCD

Masses of heavy mesons, tetraquarks and pentaquarks computed in a potential model are shown. Tetraquarks are studied as bound states of a diquark and an antidiquark. Pentaquarks are constructed from a series of two-body interactions between the four quarks and the antiquark. New results on $Qs\bar{Q}\bar{q}$ and $QQ\bar{Q}\bar{Q}$ tetraquarks are also obtained.