[API] Get all songs

[Ulrar]

Hi,

Is there a way to get all songs ? I'm trying to implement a mopidy backend and I'd need a way to build the library.
Currently I iterate though all the albums of all the artists, but it takes literally hours to complete that (one http request by album, on 2 To of music, that's reeeeaaaly long).

Is there any way to use search2 or search3 for that ? I tried to query empty, or *, but I don't find how to make that works.
Thanks.