[[File:Jan Howard--1968.jpg|thumb|right|200px|Howard in an issue of ''[[Billboard (magazine)|Billboard Magazine]]'', August 1968]]
The success of "Evil on Your Mind" led to an increased demand in Jan's bookings. In 1966, she played a package tour that ended at California's [[Hollywood Bowl]] and another [[Detroit, Michigan]] gig that attracted roughly 24,000 people.{{sfn|Howard|1987|pp=260-261}} Decca also continued recording Jan and she often cut material written by her husband that portrayed women in assertive roles. This included her next single, "[[Bad Seed (Jan Howard song)|Bad Seed]]",{{sfn|Bufwack|Oermann|2003|p=228-229}} which also reached the US country songs top ten.{{sfn|Trott, Walt|2012|p=250}} Other recordings with similar themes included the 1967 US top country 40 songs "[[Any Old Way You Do]]" and "[[Roll Over and Play Dead]]".{{sfn|Bufwack|Oermann|2003|p=228-229}} Both appeared on her fourth LP, ''[[This Is Jan Howard Country]]'', which became a top ten-charting LP on the US country survey.<ref name="Country Albums"/>
The success of "Evil on Your Mind" led to an increased demand for Howard's concert bookings. "If I thought I'd been busy before, it was a vacation compared to now," Howard wrote. In 1966, she played a tour alongside other artists that ended at the [[Hollywood Bowl]] in California. She also played a show in [[Detroit, Michigan]] that attracted roughly 24,000 people.{{sfn|Howard, Jan|1987|pp=259-61}} While not touring, Howard was in the recording studio. Her next single release was "[[Bad Seed (Jan Howard song)|Bad Seed]]", which reached number ten on the ''Billboard'' country chart in 1966.{{sfn|Trott, Walt|2012|p=250}} An album of the [[Bad Seed (Jan Howard album)|same name]] followed in 1967 that reached number 13 on the country albums chart.<ref>{{cite magazine |title=''Bad Seed'' chart history |url=https://www.billboard.com/artist/jan-howard/chart-history/clp/ |magazine=[[Billboard (magazine)|Billboard]] |access-date=March 20, 2020}}</ref> Her fourth studio album, ''[[This Is Jan Howard Country]]'', was released in October 1967 and reached the top ten on the ''Billboard'' country chart.<ref>{{cite magazine |title=''This Is Jan Howard Country'' chart history |url=https://www.billboard.com/artist/jan-howard/chart-history/clp/ |magazine=[[Billboard (magazine)|Billboard]] |access-date=March 20, 2020}}</ref> Her further hit singles during this time included "Roll Over and Play Dead" (1967), "Any Old Way You Do" (1967), and "[[Count Your Blessings, Woman]]" (1968).{{sfn|Oermann, Robert K.|Bufwack, Mary A.|2003|p=229}} Music writers and critics took notice of her material as well. In ''Billboard'''s 1968 review, one writer called her singing to be "loaded with sincerity and heart."<ref>{{cite magazine |title=Album Reviews |magazine=[[Billboard (magazine)|Billboard]] |date=June 22, 1968 |volume=80}}</ref> Nashville music journalist [[Robert K. Oermann]] wrote in 2003, "Jan specialized in up-tempo tunes, usually filled with feisty female lyrics provided by Harlan...She brought feminine spunk to the [[Nashville Sound]]."{{sfn|Oermann, Robert K.|Bufwack, Mary A.|2003|p=229}}
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