[1] He has also been involved with bands such as Krux (on Guitar),[2] Vicious Art (on Bass/Backing Vocals),[3] The Project Hate MCMXCIX (as Vocalist) and Torture Division (on Vocals/Bass).

[5] Sandström was a founding member of Grave, performing as lead singer and rhythm guitarist, although he switched to bass after the departure of Jonas Torndal.

[9] In 2002 he co-founded doom metal band Krux as guitarist, along with vocalist Mats Levén (ex-Yngwie Malmsteen), bassist Leif Edling (Candlemass), and drummer Peter Stjärnvind (Entombed).

[2] In 2004, after his departure from Entombed, he joined Vicious Art, as bassist and backing vocalist, alongside former Dark Funeral members Matias Makela and Robert Lundin.

[11] He was a founding member of Torture Division, alongside guitarist Lord K. Philipson (also of The Project Hate) and drummer Tobias "Tobben" Gustafsson (of Vomitory).