In 2008, Lithuana National Martynas Mažvydas Library has started the reconstruction of the main building, which was completed in 2016.

The reconstruction was carried out with the funds of the State Investment Program and partially financed with the funds of the European Union Cohesion Fund, as well as the state budget of the Republic of Lithuania. The total value of the reconstruction of the main building of the Martynas Mažvydas National Library of Lithuania was 25 million euros.

The music space has been created by adapting the existing space to the needs of performers and music creators. The room uses specific and easy-to-install acoustic constructions, which blend into the overall interior of the LNMMB building, but at the same time give an exceptional visual character to the music space.

The main purpose of this hall is to provide a space for rehearsals and live performances, therefore the concept of natural adaptive acoustics was chosen. The walls of the hall are made of reflective variable-angle panels (plasterboard base panels covered with natural wood veneer), acoustic drapery is installed between the walls and the panels. Expanding / collapsing the acoustic drapery and changing the angle of the reflective panels changes the acoustic environment of the hall. The reverberation time can vary from 0.25 seconds to 0.40 seconds, the sound reflections can be concentrated in separate selected zones or split. The folded acoustic drapery in the corners acts as a low-frequency trap. Sound-absorbing acoustic ceilings are provided in the ceiling area. The acoustic characteristics of the hall can be changed individually by each performer, which ensures the acoustic multifunctionality of the space.