Rehearsals are lesson enactments with feedback prior to implementation with students, and are one facet of practice-based teacher education with an aim to promote ambitious teaching in all contexts. This study explores how rehearsals, related to literacy instruction, were enacted in an urban K-8 school between teacher candidates and their mentor teachers. Data collection included two structured interviews with each mentor and teacher candidate, and two rehearsal observations. Results indicate classroom mentors (a) provided specific, contextualized, individualized feedback in a range of ways, (b) connected feedback to underlying principles, and (c) asked teacher candidates to "rewind" and reteach rehearsed segments integrating feedback, which garnered additional and more refined practice opportunities. This study suggests that in the right circumstances rehearsals, which typically occur in higher education coursework, can enhance literacy instruction in clinical settings. Limitations and recommendations for if and how to integrate rehearsals in K-12 settings are also provided.