He privately taught several pupils , including Benjamin Britten , who later helped to make his teacher 's music better known and honored him in his Variations on a Theme of Frank Bridge for string orchestra ( 1937 ) , based on a theme from the second of Bridge 's Three Idylls for String Quartet ( 1906 ) . He privately tutored a number of pupils , most famously Benjamin Britten , who later championed his teacher 's music and paid homage to him in the Variations on a Theme of Frank Bridge ( 1937 ) , based on a theme from the second of Bridge 's Three Idylls for String Quartet ( 1906 ) .