The Japanese company, BMG Japan, sorted the original RCA RED SEAL CDs according to the composers and the year when the music pieces were created. BEST100 series are the best representative CDs, which were carefully chosen from those music pieces by acting and recording, and they were released again with the mark of RCA BEST100. These CDs are the most impressive records in the classical field at RCA’s best. Theoretically, we could find the single originals of those CDs, but BMG Japan reorganised excellently for everyone. During BMG Japan period, it was released for the first time in 1999 and for the second time in 2008 after SONY took over BMG. BEST100 series belong to the latter.