[35] Nahid Abtahi, during the years of her presence in SOL Music, also took the role of designing covers for all the albums in which she played, often using the paintings of Bahman Mehabadi.

[63] [64] [65] [66] SOL Music Ensemble donated part of the Benedictus sales to the earthquake victims of Bam in December 2003 [67] .

In order to extend the Ensemble, two new members were invited to join the group: Amar Dadizadeh (violin) and Zohreh HassanNia (piano).

SOL Music owes its extension as an independent center to the professional insights of Helen Marx to this date.

After recording the 10th album (“Song of Peace”), Amar Dadizadeh, Zohreh HassanNia, and Hooman Akhtari left the Ensemble to continue their studies.

Meanwhile, many concerts were performed by SOL Music Ensemble in different places in Tehran, such as in Germany Cultural Center, in Niavaran Cultural Center for the first Festival of Artistic Production, and in Vahdat Hall [101] , and in a few Europe tours [102] [103] [104] [105] [106] [107] [108] [109] [110] [111] [112] [113] In January 2006, SOL publishing company participated in 40th Midem Music Exhibition, Cannes, France [114] [115] [116] .

The trio held a performance in Tabriz Cultural Center [117] , being honored to have Professor Zaven Yedigharians in the audience.

Since 2012, with growing popularity, they have performed regular concerts in Iran House of Music [142] [143] [144] , the Institute of Art and Culture [145] [146] [147] [148] [149] [150] , and Iranian Artists Forum’s Shahnaz Hall [151] [152] [153] [154] [155] [156] [157] [158] [159] [160] .

Along the regular activities of the Ensemble, Bahman Mehabadi’s live performance of Bach Sonatas and Partitas was decided to be published by SOL Music in Germany.