Some recordings crossfade from one into another on a release. We should have a relationship for that.

Note that this relationship should not be used for any recording marked as "crossfade demo", as that is a short crossfaded compilation of recordings meant to demonstrate all the tracks on a release, while this relation is meant to indicate any adjacent tracks on a release that crossfade into one another.

• [Recording A] crossfades into [Recording B]
• [Recording B] crossfades from [Recording A]

Real example:

• Hyper Music crossfades into Plug In Baby
• Plug In Baby crossfades from Hyper Music