Sara Bareilles’ song 'She Used to Be Mine' from the musical Waitress is a powerful ballad that resonates deeply with audiences and performers alike. Performing this piece in a lower key, specifically key F, as a classical high soprano presents an exciting challenge and opportunity for vocalists to explore different tonal qualities and emotional expression. Transposing a song to a lower key allows sopranos to better accommodate their vocal range and add a richer, more resonant tone, which can enhance the storytelling aspect of musical theatre performances. Adaptation of contemporary musical theatre songs into classical vocal styles, such as that of a classical soprano, requires careful attention to vocal technique and phrasing. Singers must balance the technical demands of classical training with the emotive nuances of modern songwriting to deliver an authentic and compelling performance. This approach often involves adjusting breath control, vibrato, and dynamics to suit the style and mood of the song while respecting the original composition. The hashtags #sarabareilles, #sheusedtobemine, #musicaltheatre, #waitressmusical, and #classicalsoprano used in the article highlight key themes and communities interested in this content. Fans of musical theatre and Sara Bareilles’ work seek performances that highlight vocal skill and emotional authenticity. Sharing unique interpretations can inspire other singers to experiment with key changes and styles, fostering artistic growth and community engagement. This rendition is described as a "work in progress," emphasizing the journey of improving vocal performances and embracing imperfection with the phrase "imperfect, but still worthy... just like me." This sentiment aligns with the song’s themes of self-acceptance and personal reflection, adding depth to the performer's connection with the piece. Such genuine expression is crucial for engaging audiences and creating memorable performances. For singers interested in exploring similar adaptations, it is beneficial to work with vocal coaches who understand both classical technique and musical theatre styles. Tools like piano accompaniments transposed to different keys and recording performances for self-evaluation can support the refinement process. Additionally, engaging with online communities using the mentioned hashtags provides feedback and encouragement from fellow musicians. In summary, performing 'She Used to Be Mine' in the lower key of F as a classical soprano offers a meaningful way to reinterpret this evocative song. It bridges classical training and contemporary musical theatre, underscoring the universal themes of growth and acceptance that Sara Bareilles’ music beautifully conveys.