Question: How many albums by the artist who released Sending You a Little Christmas have made the Billboard charts?
Context: Give Me Your Love for Christmas is the third holiday-themed album by American pop singer Johnny Mathis and was released by Columbia Records on October 13, 1969.  The oldest song selected for this project was the 1934 classic "Santa Claus Is Coming to Town", which meant there were not the traditional hymns that could be found on his previous Christmas outings.  He did, however, cover several other contemporary Christmas favorites along with a few new and lesser-known songs, such as the title track, which was a reworking of an unreleased recording of his from 1961, and "Christmas Day", which came from the then-current Broadway musical "Promises, Promises".  New versions of "Have Yourself a Merry Little Christmas" and "The Little Drummer Boy", which he also recorded in 1963 for his previous Christmas LP, "Sounds of Christmas", made the final track list here as well. 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! ". It Won't Be Christmas Without You is the first Christmas music album by country group Brooks & Dunn released in 2002.  Their first album of Christmas music, it features covers of traditional Christmas songs, as well as several newly written tunes.  Four of the album's songs — "Hangin' 'Round the Mistletoe", the title track, "Rockin' Little Christmas" and "Winter Wonderland" — received enough airplay to enter the "Billboard" country music charts, peaking at numbers 47, 41, 57 and 57, respectively. Unica (Only one) is India's ninth Studio Album.  India released Unica under record label Top Stop Music which was founded by grammy winner Sergio George.  The album features her 7th #1 hit on the Tropical Billboard Charts, "Estupida", which made India the female with the most #1 hits on the Tropical Billboard Charts.  Estupida was her first single off the album, released in two versions, one salsa and the other a ballad version.  The album was released on, June 1, 2010.  India's album release party was held in San Juan, Puerto Rico. John Royce "Johnny" Mathis (born September 30, 1935) is an American singer of popular music.  Starting his career with singles of standard music, he became highly popular as an album artist, with several dozen of his albums achieving gold or platinum status and 73 making the "Billboard" charts to date. Sending You a Little Christmas is a Christmas album by American pop singer Johnny Mathis that was released on October 29, 2013, by Columbia Records.  In addition to piano accompaniment on the title track by its composer Jim Brickman, this particular holiday release of original recordings (number six for Mathis) is distinguished by duets with guest vocalists Susan Boyle, Natalie Cole, Gloria Estefan, Vince Gill, Amy Grant, Billy Joel, and The Jordanaires. Ear to the Street is the debut album released by hip hop duo The Conscious Daughters.  It was released on November 30, 1993 for Scarface Records, distributed by Priority Records and produced by rapper Paris.  Ear to the Street was a success on the billboard charts, it made it to 126 on the "Billboard" 200, 25 on the Top R&B/Hip-Hop Albums chart and 7 on the Top Heatseekers.  Also two singles made it to the Billboard charts, "Somethin' To Ride To (Fonky Expedition)" and "We Roll Deep". List of K-pop on the Billboard charts is a compilation of chart information for K-pop music published by the "Billboard" charts, and reported on by "Billboard K-Town", an online "Billboard" column.  This is a list of K-pop albums and EPs on the Billboard charts. "Sending You a Little Christmas'" is a 2003 single by Jim Brickman with vocals by Kristy Starling.  The single was written by Brickman along with Billy Mann and Victoria Shaw.  The single was a cut from Brickman's "Peace" CD and was his second number one on the Adult Contemporary chart.  "Sending You a Little Christmas" spent one week at number one, and only charted on the Adult Contemporary chart. From I Extreme II Another is the second album by the group, II D Extreme.  The album was released on October 29, 1996 for MCA Records and was produced by D'Extra Wiley, Randy Gill and Jermaine Mickey.  The album was met with mixed reviews and was a commercial failure, not making it on any billboard charts.  Two singles made it to the billboard charts, "If I Knew Then (What I Know Now)" and "You Got Me Goin'" but neither made it high on the charts.
Answer: 73