Main performing

Rick van der Linden formed Trace after he left Ekseption in 1973. The rest of the trio was made up of Jaap van Eik on bass and former Focus-drummer Pierre van der Linden.
Various artists
This category contains various bands, musicians and records with some kind of relevance to the collection. With only one or two items in the collection, I have however found it more advantagious to associate these artists with this shared category.
Various artists - compilations
This category contains various compilations with one or more tracks from Focus or related musicians. Note that artist spesific collections and "Best of" records are filed under the name of the main performing band or artist.