To celebrate their twentieth birthday in 2023, Auļi released a best of compilation entitled Deviņvīru spēks, which translates literally to ‘strength of nine men’, but is also the Latvian name for the mullein plant (Verbascum Thapsus), used in a number of Latvian folk remedies. Auļi have also extensively collaborated with not just other Latvian musicians, but with many international musicians, and many of the tracks on Deviņvīru spēks are such collaborations. From Latvia, Auļi have performed with the group Tautumeitas on the song ‘Dzied’ papriekšu, brāļa māsa’, and assembled a large group that included Suitu sievas, Vilkači, Tarkšķi and others, to perform the song ‘Ozoliņi’.