"Sleepless: A Musical Romance," which premiered at the Troubadour Wembley Park Theater in London on Tuesday, is more significant for its symbolic importance as London's first fully staged indoor musical since the start of the coronavirus pandemic in March. While there have been several musical revivals performed in outdoor venues around the city, they have been limited in scale and often had minimal casts. Despite the somewhat bland nature of "Sleepless," the fact that it is running through September 27 on a larger scale than previously thought possible is commendable. The musical is based on the popular 1993 film "Sleepless in Seattle," which features Tom Hanks and Meg Ryan as the main characters who are kept apart until the end. This version of "Sleepless" is not related to a 2013 stage musical. The show incorporates a geographical separation in line with current social distancing measures, with the characters eventually meeting at the Empire State Building. Safety measures such as daily testing for the cast and crew, mandatory masks for audiences, temperature checks, and hand sanitizer stations are in place. The theater in northwestern London, located away from the closed West End, is selling less than one-third of its 1,300 seats per performance as a way to limit revenue. This decision was made by producers who believed that having some paying audience was better than having no audience at all. The production "Sleepless: A Musical Romance" at Troubadour Wembley Park Theater is based on the 1993 hit film "Sleepless in Seattle" and is London's first fully staged indoor musical in months. Despite the dedication of everyone involved, it is disappointing that director Morgan Young's production is not more exciting, even though the leads are likeable. Young and his two English stars had previously collaborated on the West End premiere of the 1996 Broadway musical "Big," another adaptation of a Tom Hanks film. An image provided by Alastair Muir shows Kimberley Walsh, Jack Reynolds, and Jay McGuiness in "Sleepless: A Musical Romance" at the Troubadour Wembley Park Theater in London, based on the popular 1993 film "Sleepless in Seattle." This production marks London's first fully staged indoor musical in months. The musical features a new British composing team, Robert Scott and Brendan Cull, in a theater scene dominated by Andrew Lloyd Webber. However, the score of the musical is criticized for having a repetitive, easy-listening quality with songs blending together. The protagonist's songs mainly focus on her feelings of being "out of my mind" or "out of my head" due to developing an unexpected obsession with a man across the United States. In the film, viewers empathize with Walter, Annie's partner, who is taken aback by her growing attraction to a voice she wants to meet in person. Sam, a depressed architect from Seattle, takes a backseat to his son Jonah, who steals the spotlight with his matchmaking skills. Jonah, played by Jobe Hart, delivers a standout performance in the musical number "Now or Never" alongside Cory English. The film, inspired by Nora Ephron's screenplay, occasionally overuses certain references. It is acceptable to portray Annie, a journalist for The Baltimore Sun, as a movie enthusiast with a strong fascination for the Cary Grant-Deborah Kerr film "An Affair to Remember," which served as inspiration for Ephron's film. However, it is unclear why Annie must express her admiration for Grant or why she would debate the pronunciation of Kerr's last name if she is such a devoted movie buff. Nevertheless, Annie is depicted as someone who finds even simple words like "exotic" to be exotic, making her conversations unpredictable. McGuiness and Walsh, both known for their work with popular music groups, are effective leaders in a production that feels somewhat lacking in originality. Despite this, "Sleepless" is enjoyable, leaving audiences eager for more high-quality theatre productions in the future. Text = Copyright 2020 New York Times News Service.