Per Jonas Wiberg is a Swedish musician who has been a member of the bands Spiritual Beggars (1998-) as a keyboardist, King Hobo (2007-) as a keyboardist, guitarist, and vocalist, and Kamchatka (2015-) as a bassist and vocalist, his solo band, Per Wiberg (2019-), and Switchblade (2020-) as a Bassist. Wiberg was formerly in the bands, Death Organ (1993-1997) as an Organist, Boom Club (1994) as a Vocalist, and Opeth (2003-2011) as a Keyboardist / Backing vocalist.

Spiritual Beggars is a stoner metal band from Halmstad, Sweden, formed by Michael Amott, who is known from Arch Enemy, Carcass and Carnage. The band is heavily influenced by 1970s hard rock and incorporates elements of psychedelia into its music.