Browse a tag as a nested tree

Some tags pack a hierarchy into a single value with a separator — a Grouping tag of Jazz/Cool Jazz, a custom genre of Electronic/Ambient/Drone. By default that whole string is one flat entry, so the structure you encoded in the tag is wasted. Mark the field as hierarchical and the plugin splits each value on a delimiter you choose and turns it into a drill-down tree instead — you pick Jazz, then Cool Jazz, exactly as the tag is written.

You set this up on the Library Options tab: pick a field, type the one character that separates its levels (for example /), and add it to the list. It then applies wherever that field is used as a grouping level in any discovery path. Tracks tagged at a branch rather than a leaf — tagged just Jazz, with no sub-genre — appear under a bracketed [Jazz] entry beside the deeper branches, so nothing is hidden. A branch that holds only one child collapses automatically (the same one-choice rule as everywhere else), and ; can't be used as the delimiter — that's MusicBee's own multi-value separator, so a value like Rock; Jazz/Cool Jazz is split into the two tags first, then each is drilled.

Worked example. Your tracks carry a Grouping tag like Jazz/Cool Jazz, Jazz/Hard Bop and Classical/Baroque, and a discovery path that groups by Grouping. Flat, the node lists three long entries. Mark Grouping hierarchical with /, and the same node now opens to Jazz and Classical; opening Jazz reveals Cool Jazz and Hard Bop. A track tagged just Jazz shows up under a [Jazz] entry alongside them. You can't predict this layout from the tag alone — it depends entirely on which field you've marked and with which delimiter — so it's worth setting up deliberately.

Settings

Control	What it does
Hierarchical fields	The list of fields rendered as a drill-down tree, each paired with its one-character delimiter. Pick a field, type the separator (not ;), and add it; the field then drills level-by-level wherever a discovery path groups by it.