Question: Michael E. Renzi, is an American composer, music director, pianist and jazz musician, he is also friends and partners with which jazz singer, with whom he has published a Christmas album titled,"Our First Christmas", an annual festival commemorating the birth of Jesus Christ, observed most commonly on December 25 as a religious and cultural celebration among billions of people around the world?

Context articles: Christmas
Wintersong
A Lovely Way to Spend Christmas
Christmas Wish (Gina Jeffreys album)
Christmas Celebration
Christmas Eve
Ziemassvētki
The Classic Christmas Album (Johnny Mathis album)
Mike Renzi
Elvis' Christmas Album

Christmas is an annual festival commemorating the birth of Jesus Christ, observed most commonly on December 25 as a religious and cultural celebration among billions of people around the world.
 A feast central to the Christian liturgical year, it is prepared for by the season of Advent or the Nativity Fast and initiates the season of Christmastide, which historically in the West lasts twelve days and culminates on Twelfth Night; in some traditions, Christmastide includes an Octave.
 The traditional Christmas narrative, the Nativity of Jesus, delineated in the New Testament says that Jesus was born in Bethlehem, in accordance with messianic prophecies; when Joseph and Mary arrived in the city, the inn had no room and so they were offered a stable where the Christ Child was soon born, with angels proclaiming this news to shepherds who then disseminated the message furthermore.
 Christmas Day is a public holiday in many of the world's nations, is celebrated religiously by the vast majority of Christians, as well as culturally by a number of non-Christian people, and is an integral part of the holiday season, while some Christian groups reject the celebration.
 In several countries, celebrating Christmas Eve on December 24 has the main focus rather than December 25, with gift-giving and sharing a traditional meal with the family.
Wintersong is the sixth album and first Christmas album by Canadian singer-songwriter Sarah McLachlan, released in October 2006.
 It was produced by longtime collaborator Pierre Marchand and includes contributions from Jim Creeggan of Barenaked Ladies.
 The album also includes a duet with Jazz musician Diana Krall.
 In 2015, all songs from "Wintersong" plus five more tracks were released as "The Classic Christmas Album".
A Lovely Way to Spend Christmas is the third studio and first Christmas album released by American singer and actress Kristin Chenoweth.
 Released on October 14, 2008, the album sees Chenoweth collaborating with jazz musician John Pizzarelli on "Sleigh Ride/Marshmallow World".
 Chenoweth stated she had desired to record a Christmas album since signing with Sony Classical in 2000 after being inspired by Barbra Streisand's "A Christmas Album" as a child.
 The album has peaked at #77 on the "Billboard" 200 so far, and has become her first album to chart on the Billboard 200.
"Christmas Wish" is the fourth studio and first Christmas album by Australian country singer Gina Jeffreys.
 The album contained four original tracks and nine Christmas classics.
 The lead single was "There's No Gift", which Jeffreys and McCormack co-wrote with American singer Jason Sellers.
 The album includes a duet with Australian jazz musician James Morrison and Australian a cappella vocal ensemble The Idea of North.
Christmas Celebration is a compilation album by Mannheim Steamroller.
 It is the group's seventh Christmas album overall.
 The album was released in 2004 on CD and DVD by American Gramaphone to celebrate the 20th anniversary of the group's first Christmas album.
 The album features eighteen Christmas songs in progressive rock and Renaissance styles, and includes three new tracks: "Celebration", a vocal version of the previously released "Traditions of Christmas", and "Messengers of Christmas", a Target version bonus track.
 The remaining songs are new mixes of previously released songs.
 A limited edition version of the album, available exclusively at Target stores, featured two extra songs: "The Holly and the Ivy" and "Messengers of Christmas".
Christmas Eve is the day before Christmas Day, the festival commemorating the birth of Jesus of Nazareth.
 Christmas Day is observed around the world, and Christmas Eve is widely observed as a full or partial holiday in anticipation of Christmas Day.
 Together, both days are considered one of the most culturally significant celebrations in Christendom and Western society.
Ziemassvētki (] ), also Ziemsvētki is an annual festival which observes the winter solstice and birth of Jesus Christ.
 In most of the world it is celebrated from 24 to 26 December.
 24 December is Ziemassvētki Eve, 25 December is The First Ziemassvētki, while 26 December is the Second Ziemassvētki).
 Christianity traditionally celebrates the birthday of Jesus Christ on 25 December, however, in some Orthodox churches that date is calculated on the basis of the Julian calendar and, as a result, the majority of Orthodox churches celebrate Ziemassvētki on 6, 7 and 8 January.
The Classic Christmas Album is a Christmas compilation album by American pop singer Johnny Mathis that was released on October 7, 2014, by Columbia Records and includes two 1961 recordings that were previously unavailable: "Ol' Kris Kringle" and the original version of the title track from his 1969 Christmas album "Give Me Your Love for Christmas".
 Three other songs ("Christmas in the City of the Angels", "Sign of the Dove" and "The Very First Christmas Day") make their debut on compact disc as of this release, and two other non-album singles ("Christmas Is..." and "My Kind of Christmas") can be counted among the rarities here.
 The collection also includes a selection or two from several of Mathis's Christmas studio albums—"Sleigh Ride" from "Merry Christmas", "Have Yourself a Merry Little Christmas" from "Sounds of Christmas", "Calypso Noel" from "Give Me Your Love for Christmas", "The Christmas Waltz" and "It's Beginning to Look a Lot Like Christmas" from "Christmas Eve with Johnny Mathis", and "Home for the Holidays" from "Sending You a Little Christmas"—as well as his duet with Bette Midler from her 2006 holiday album "Cool Yule", which was a medley of "Winter Wonderland" and "Let It Snow!
 Let It Snow!
 Let It Snow!
".
Michael E. Renzi (known as "Mike Renzi") is an American composer, music director, pianist and jazz musician.
 He was musical director for Peggy Lee and Mel Torme for over 25 years.
 He is also friends and partners with jazz singer Cynthia Crane, with whom he has published a Christmas album titled ""Our First Christmas"".
 Renzi also has his own jazz group called "The Mike Renzi Trio", which published an album together with tenor sax legend Ben Webster.
Elvis' Christmas Album is the fourth studio album and first Christmas album by American singer and musician Elvis Presley on RCA Victor, LOC -1035, a deluxe limited edition, released in October 1957, and recorded at Radio Recorders in Hollywood.
 It has been reissued in numerous different formats since its first release.
 It spent four weeks at number one on the Billboard Top Pop Albums chart, and was the first of two Christmas-themed albums Presley would record, the other being "Elvis Sings the Wonderful World of Christmas", released in 1971.
 The publication Music Vendor listed Elvis' Christmas Album on their singles charts for two weeks in December 1957 – January 1958, with a peak position of #49.