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HSD on Twitter: "Harry's new guitar was designed by The Haas Brothers (Simon and Nikolai Haas). IG: https://t.co/wxlffX6ky7 https://t.co/UZzfF3Pa16" / Twitter
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Stream Georg Friedrich Haas: Quartett (für vier Gitarren) by ALEPH Guitar Quartet | Listen online for free on SoundCloud
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Guitarra Flamenca: Musikalisch-technische Aspekte des modernen Flamenco-Gitarrenspiels by Michael Haas
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5 Bagatellen für Gitarre solo GS 002 : Michael Haas, Gitarren Studio Musikverlag, Berlin-West: Amazon.de: Bücher
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