The best episode in terms of soundtrack in Star Trek Voyager is a matter of personal preference and subjective interpretation. However, the episode "Heroes and Demons" stands out as one with a memorable and impactful score.
The music in "Heroes and Demons" was composed by Jay Chattaway and effectively enhances the episode's tense and dramatic moments. The use of percussion and strings, particularly in the scene where the character Tuvok is trapped in a holodeck simulation, adds to the sense of urgency and danger. The music also effectively conveys the sense of mystery and otherworldly atmosphere of the holodeck simulation, which is meant to resemble a medieval castle.
Another standout moment in the soundtrack of "Heroes and Demons" is the use of a haunting vocal performance during the final act. The vocals add to the emotional impact of the scene and underscore the sense of loss and sacrifice.
It is worth noting that Star Trek Voyager had a talented pool of composers, including Chattaway, Dennis McCarthy, and Paul Baillargeon, who contributed to its musical landscape throughout its seven-season run. Each composer brought their own unique style and musical voice to the series, resulting in a diverse and memorable soundtrack.
In conclusion, while there are many episodes of Star Trek Voyager with noteworthy soundtracks, "Heroes and Demons" stands out for its effective use of music to enhance the episode's dramatic moments and create a memorable viewing experience. The soundtrack of Star Trek Voyager, as a whole, played a crucial role in establishing the series' tone and atmosphere and remains a memorable aspect of the show for many fans.