Currently every time you open a new tab the music library is charged.
Many times you don't want to access the music library, but a radio station, or the auto DJ, or a playlist, or whatever... but you must open the new tab, to wait for the library to charge (if you have a big music library that takes a few moments) and then select in the left panel what you want.
Wouldn't be much better to open every new tab as a blank page, which is much faster, and then to select what you want?
Even better, instead of a blank page the new tab could contain a page displaying all left panel's links, so you wouldn't need to show left panel in case is hidden. Just open the new tab, press the link and go directly where you want, easy and fast.