Question:  In a Metal Mood: No More Mr. Nice Guy is a 1997 album by an American who had how many top-40 hits?
Related documents: [0]  [DOC] Charles Eugene "Pat" Boone (born June 1, 1934) is an American singer, composer, actor, writer, television personality, motivational speaker, and spokesman. He was a successful pop singer in the United States during the 1950s and early 1960s. He sold more than 45 million records, had 38 top-40 hits, and appeared in more than 12 Hollywood films. [END] 
[1]  [DOC] In a Metal Mood: No More Mr. Nice Guy is a 1997 album by Pat Boone in which Boone covers hard rock and heavy metal songs in a jazz/big band style. Boone promoted the album by appearing in leather clothing (and, at that year's American Music Awards, wearing a dog collar). He succeeded in propelling "Metal Mood" onto the "Billboard" record charts (making it Boone's first hit album in 35 years), but it did not please some of his older, longtime fans who considered the heavy metal genre in bad taste, or worse. The album has since become somewhat popular as a joke gift to metal fans (as often indicated in reviews given to it) although some serious sites have given it good reviews on its own merits. The album featured guest appearances from well-known rock musicians such as Ronnie James Dio and Ritchie Blackmore. [END] 
Answer: 
38
38