PMLP05445-000000014119 01 Tchaikovsky Trio, Op. File:PMLP05445-000000014119 01 Tchaikovsky Trio, Op. PMLP05445-000000014118 01 Tchaikovsky Trio, Op. File:PMLP05445-000000014118 01 Tchaikovsky Trio, Op. Canada because they fail to meet the minimum ‘threshold of originality’ to qualify for copyright as an ‘adaptation’.