Question: Songs of the Season is the second Christmas album by an American singer who, since 1985, has recorded 20 studio albums, and charted more than how many singles on the Billboard Hot Country Songs charts?
Context: The discography of John Anderson consists of 20 studio albums and 64 singles.  He recorded for Warner Bros.  Records from 1980 to 1986, and again in 2007.  Other labels to which he was signed include MCA, Capitol, BNA and Mercury.  His most commercially successful album, 1992's "Seminole Wind", achieved double platinum certification from the Recording Industry Association of America (RIAA).  Anderson has charted five number 1 singles on the Hot Country Songs charts, and has had 15 other singles reach Top 10. The discography of American country artist Martina McBride consists of thirteen studio albums, one live album, four compilation albums, two video albums, three additional albums, forty five music videos, fifty one singles, sixteen other charting songs, and forty five album appearances.  In 1991, she signed a recording contract with RCA Records, launching her debut studio album "The Time Has Come" in 1992.  In September 1993, her second studio album "The Way That I Am" was issued.  Its lead single "My Baby Loves Me" reached number two on the "Billboard" Hot Country Songs chart, becoming her breakthrough hit.  The third single "Independence Day" peaked in the top twenty and became McBride's signature song.  The song's success elevated sales of "The Way That I Am" to platinum status from the Recording Industry Association of America. " Wild Angels" was released in September 1995 and reached number seventeen on the "Billboard" Top Country Albums chart.  The album's title track became McBride's first song to top the Hot Country Songs list.  McBride's fourth studio album "Evolution" was released in August 1997 and is her best-selling album to date, certifying three times platinum in the United States.  The album spawned six singles which all became major hits including, "A Broken Wing", "Wrong Again", and "Whatever You Say".  After releasing a holiday album, McBride's fifth studio album "Emotion" was issued in September 1999.  The lead single "I Love You" topped the Hot Country Songs list, while also reaching minor positions on the Adult Contemporary and "Billboard" Hot 100 charts. Kenneth Arnold "Kenny" Chesney (born March 26, 1968) is an American country music singer, songwriter and record producer.  He has recorded 20 albums, 14 of which have been certified Gold or higher by the RIAA.  He has also produced more than 40 top 10 singles on the U.S. "Billboard" Hot Country Songs and Country Airplay charts, 29 of which have reached number one on the charts.  Most of these have also charted high within the top 40 of the US "Billboard" Hot 100, making him one of the few successful crossover country artists.  He has sold over 30 million albums worldwide. SHeDAISY is an American country music group composed of sisters Kassidy, Kelsi and Kristyn Osborn.  The trio recorded for Lyric Street Records between 1999 and 2010, releasing five studio albums (counting a Christmas album), one remix album, one compilation album, thirteen singles and two Christmas songs for the label.  Of the trio's albums, 1999's "The Whole SHeBANG" is certified platinum by the Recording Industry Association of America, and 2004's "Sweet Right Here" is certified gold.  Four of the group's singles have reached Top Ten on the "Billboard" Hot Country Songs charts, with the highest being the number 2 "I Will… But" from 2000. Randy Bruce Traywick (born May 4, 1959), better known by his stage name, Randy Travis, is an American country music singer, songwriter, guitarist, and actor.  Since 1985, he has recorded 20 studio albums and charted more than 50 singles on the "Billboard" Hot Country Songs charts, and 16 of these were number-one hits.  Considered a pivotal figure in the history of country music, Travis broke through in the mid-1980s with the release of his album "Storms of Life", which sold more than four million copies.  The album established him as a major force in the Neotraditional country movement.  Travis followed up his successful debut with a string of platinum and multi-platinum albums.  He is known for his distinctive baritone vocals, delivered in a traditional style that has made him a country music star since the 1980s. Let It Be Christmas is the second Christmas album by American country music artist Alan Jackson.  Unlike his first album of Christmas music (1993's "Honky Tonk Christmas"), this one is composed mainly of renditions of traditional Christmas music.  The title track, one of two Christmas songs composed by Jackson, was a Top 40 hit for Jackson on the Hot Country Songs charts. Songs of the Season is the eighteenth studio album and the second Christmas album by American country music artist Randy Travis.  It was released by Word Records on September 25, 2007.  The album peaked at number 26 on the "Billboard" Top Country Albums chart. Kathleen Alice "Kathy" Mattea (born June 21, 1959) is an American country music and bluegrass performer who often brings folk, Celtic, and traditional country sounds to her music.  Active since 1984 as a recording artist, she has charted more than thirty singles on the "Billboard" Hot Country Songs charts, including four that reached No. 1: "Goin' Gone", "Eighteen Wheels and a Dozen Roses", "Come from the Heart", and "Burnin' Old Memories", plus twelve more that charted within the top ten.  Mattea released ten studio albums, a Christmas album, and a greatest hits package for Mercury Nashville between 1984 and 2000, and four more albums on independent labels after that.  She has collaborated with Dolly Parton, Michael McDonald, Tim O'Brien, and her longtime husband, Jon Vezner.  Mattea is also a two-time Grammy Award winner: in 1990 for "Where've You Been", and in 1993 for her Christmas album "Good News". A Classic Christmas is the second Christmas album from American country music singer-songwriter Toby Keith.  Released in 2007, the album comprises two discs (though all the songs could easily fit onto one CD).  While his previous Christmas album, 1995's "Christmas to Christmas", was composed of original songs, Keith recorded 20 Christmas standards for "A Classic Christmas". Alabama is a country music band composed of Randy Owen, Jeff Cook, Teddy Gentry and Mark Herndon.  Its discography comprises nineteen studio albums, including sixteen for RCA Records, as well as two Christmas albums and two Christian music albums.  Alabama also charted sixty-four singles on the "Billboard" Hot Country Songs charts (not counting Christmas releases and guest singles), of which thirty-two reached Number One.  The band's longest-lasting Number One was "Jukebox in My Mind", which spent four weeks at that position in 1990.  Several of the band's early-1980s releases also crossed over to the "Billboard" Hot 100 and Hot Adult Contemporary Tracks charts, including "Love in the First Degree", "Take Me Down" and "The Closer You Get", all of which were Top 40 pop hits.
Answer: 50