Boris Romanovich Rotenberg Boris Romanovich Rotenberg Boris Romanovich Rotenberg (, born in Leningrad on 3 January 1957) is a Russian business man and oligarch. He is co-owner (with his brother Arkady Rotenberg) of the SGM (StroyGazMontazh) group, the largest construction company for gas pipelines and electrical power supply lines in Russia. He was listed by Forbes as Russia's 69th wealthiest person in 2016 with a net worth of $1.07 billion. He is considered a close confidant of president Vladimir Putin. Rotenberg was very involved in martial arts between 1968 and 1978, particularly judo. He trained alongside Vladimir Putin and won several awards for
Abie Rotenberg and Shlomo Carlebach as strong influences. While his folk-inspired sound and inspirational lyrics are strongly reminiscent of Carlebach, Rotenberg's soft and sometimes melancholic voice, however, contrast with Carlebach's ecstatic style. Rotenberg has collaborated with other Jewish musicians including Mordechai ben David, Avraham Fried, Yehuda Schechter, Yaakov Shwekey, Moshe Yess and Shlomo Simcha with whom he co-starred in Israel National Radio's Miracles 18 concert. Rotenberg has also been a main fixture of the annual HASC "A Time for Music" concerts. He has produced a children's audio series called the "Marvelous Midos Machine" composed of 4 volumes, with all original material. Rotenberg