 The episode features several works of classical music at a concert meant to feature music by Wolfgang Amadeus Mozart . While the first is Mozart 's String Quartet <unk> in C @-@ Major , the second piece is String Sextet No.1 by Johannes Brahms . The rest of the episode was scored by Dennis McCarthy ; " Sarek " was one of several episodes on which he worked . Story editor Ronald D. Moore thought that " Sarek " was better than " Journey to Babel " , and it allowed Lenard to do some " solid acting " . Director Les Landau also praised Lenard 's performance , saying that a moment when a tear rolls down Sarek 's face was portrayed as " something special " . He added that the dynamics in the mind meld scene reached " a level that I think is classic in Star Trek history " , describing Stewart 's performance as " truly spectacular " . The mind meld scene was shot in a single take . 
