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Here is a short artist description based on the information provided:

Rebecca Luker was a renowned American actress, singer, and recording artist, celebrated for her crystal clear operatic soprano voice and impressive three-decade-long career in Broadway musicals. With three Tony Award nominations, she left an indelible mark on the theater world, starring in iconic shows such as The Sound of Music, The Music Man, and Show Boat.

Translation to English (UK) is not necessary as the text is already in English, but I can provide the same text with some minor adjustments to conform to UK English spelling and vocabulary:

Rebecca Luker was a renowned American actress, singer, and recording artist, celebrated for her crystal clear operatic soprano voice and impressive three-decade-long career in Broadway musicals. With three Tony Award nominations, she left an indelible mark on the theatre world, starring in iconic shows such as The Sound of Music, The Music Man, and Show Boat.

Note that the only change made was replacing "theater" with "theatre", which is the preferred spelling in UK English.