https://youtu.be/bcfyGgMpEzsThis melody, from the London Spanish and Portuguese community, is reserved exclusively for the Kedusha of Shachrit on both Rosh Hashana and Yom Kippur. It is a stand-alone item, curiously unrelated to any other melody or motif from the high holiday repertoire. This is in contrast to the Kedusha melody used for Mincha, which is based on the chant for 'Achot Ketana'; and to the special Keter melody for Musaf, which is an elaborated variation of 'Hashem Bekol Shofar'.That said, this tune does have a close relative in Amsterdam, which is sung, in a wonderfully rhythmic baroque style; not on the Yamim Nora'im, but on festive occasions such as Shabbat Chol Hamo'ed.https://youtu.be/QxJzGxBeYzgPlease like and share.For an mp3 of this recording please visit my website, where there are 80 selections available for downloading.http://danielhalfon.com/multitrack-recordings/תזכו לשנים רבות נעימות וטובות