When creating a new arrangement, you have been able to search popular recordings and base your arrangement on one. You can now link any arrangement you've previously created to a popular recording. In addition to importing the key, bpm, meter, and sequence, this will allow tighter integrations with other products in the future.
To get started, visit an arrangement that is not already linked to a popular recording. Then click the link icon next to the pencil and choose a popular recording.
If there is no link icon (and you do see the pencil), then your arrangement is already linked to a popular recording.