Here is the design of a clinical trial:

Official Title: Result of a Music Intervention on Anxiety in Critically Ill Patients

Included conditions:
- Anxiety

Study Armgroups:
- {'label': 'Recorded music', 'type': 'EXPERIMENTAL', 'description': 'Recorded music intervention', 'interventionNames': ['Other: Music']}
- {'label': 'Control', 'type': 'NO_INTERVENTION', 'description': 'Standard of care'}

Interventions:
- {'type': 'OTHER', 'name': 'Music', 'description': 'Preferred music of the participant administered using headphones.', 'armGroupLabels': ['Recorded music']}

Primary Outcomes:
- {'measure': 'Anxiety (VAS-A)', 'description': 'Measured using the Visual Analogue Scale for Anxiety (VAS-A), on a scale of 0 to 10, in which a higher score means a worse outcome.', 'timeFrame': '1.5 year'}

Please estimate the sample size based on the assumption: 
A global significance level of 5%, a significance level of 1.7% for each of the three VAS-A tests using Bonferroni correction, a power of 80%, two-sided testing, and a dropout rate of 10%.
Sample size
        For the sample size calculation, we assumed a treatment effect based on the study of Chlan et al.16 They report a mean VAS-A of 50.5âmm with a SD of 29.2âmm in the ICU population. They found a reduction of 19.5âmm when music intervention is provided. To achieve a global significance level of 5%, a significance level of 1.7% based on the Bonferroni correction will be used for each of the three VAS-A tests (on day 1, 2 and 3 after inclusion), accounting for multiple testing and to obtain a power of 80%, planning two-sided testing, and a dropout rate of 10%. Consequently, the sample size will be 104, which means 52 in each study arm. (This sample size calculation was performed using https://clincalc.com/stats/samplesize.aspx.)