| 角色 | 饰演者介绍 |
| Louis Connelly | 乔纳森·莱斯·梅耶斯 |
| Lyla Novacek | 凯丽·拉塞尔 |
| August Rush | 弗莱迪·海默 |
| Wizard | 罗宾·威廉斯 |
| Thomas | 威廉姆·赛德勒 |
| Richard Jeffries | 泰伦斯·霍华德 |
| Hope | Jamia Simone Nash |
| Nick | 亚伦·斯塔东 |
| Businessman | Robert Aberdeen |
| Bill | Henry Caplan |
| Peter | Tyler McGuckin |
| Arthur | 莱昂·托马斯三世 |
| Marshall | 艾历克斯·奥洛林 |
| Steve | Jamie O'Keefe |
| Policeman | Dominic Colon |
| Mannix | Michael Drayer |
| Backbeat | Anais Martinez |
| Lizzy | 邦妮·麦基 |
| Jenny | 贝基·纽顿 |
| Blues boy on guitar | Zach Page |
| The Dean | Marian Seldes |
| Reverend James | 麦凯尔泰·威廉逊 |
| Professor | Ronald Guttman |
| Roller Bull | Bilal Bishop |
| Feedback | Michael R. Hammonds II |
| Joey (as Timothy T. Mitchum) | Timmy Mitchum |
| Club Manager | John Knox |
| Receptionist | Amy V. Dewhurst |
| Cop | Victor Verhaeghe |
| Old Neighbor | Darrie Lawrence |
| Frank | Sean Haberle |
| Driver | Jamal Joseph |
| Apartment Owner | Georgia Creighton |
| Orphanage Kid | Joshua Jaymz Doss |
| Orphanage Boy | Craig Johnson |
| Megan | Megan Gallagher |
| Meagan's Mom | Deirdre Lorenz |
