Catherine O'Hara's musical performances are being highlighted in various outlets, with some focusing on her most memorable moments and others looking back at her iconic roles. The number of notable performances cited varies, with some outlets listing 5, 8, or 10 of her best roles. Her work in projects such as 'Nightmare Before Christmas', 'Jazzagals', 'Schitt's Creek', and 'Home Alone' is being referenced as part of these retrospectives.