R2Sidebar, combined

One sidebar from your notes: no bottom bar (sidebar open = widescreen), green Search, a bottom icon cluster (Search, Notifications, Messages, Friends, More), the Pinned list, and Edit tabs. Everything is clickable. Search placement is the A / B switch. Placeholder: pinned list, status counts for tabs other than Songs, and the made-up friend/message badges.

Search placement Theme Screen

1 No bottom barSidebar open means a wide screen, so the bar is gone in every frame.

2 Green Searchv4 green #1db954, round in A, full-width bar in B.

3 Icon clusterNotifications, Messages, Friends in one pill, plus a ... button that opens More.

4 PinnedShows what you pinned. Tap the gold star to unpin.

5 Edit tabsShow or hide, reorder (drag), pin. Hidden tabs move into More.