Question: Between Variety and Keyboard, which magazine covers broader topics?

Context articles: Keyboard (magazine)
Ken Barr
Professional Artist (magazine)
Kraken Opus
Issues in Environmental Science and Technology
Essence (magazine)
Singapore Business Review
The Wisconsin Engineer
Variety (magazine)
Danny Sullivan (technologist)

Keyboard is a magazine that originally covered electronic keyboard instruments and keyboardists, though with the advent of computer-based recording and audio technology, they have added digital music technology to their regular coverage, including those not strictly pertaining to the keyboard-related instruments.
 The magazine has its headquarters in San Bruno, California.
Ken Barr, working name of Kenneth Barr (17 March 1933 – 25 March 2016), was a Scottish artist who drew and painted DC and Marvel comics and magazines, Doc Savage magazine covers, science fiction and fantasy novel and magazine covers.
 His style evolved into powerful "photo-realism" depictions of heroes similar to the paintings of James Bama.
Professional Artist is an American bimonthly art trade magazine that provides tools and resources for visual artists.
 It was established under the name "Art Calendar" in 1986 and provides tips and insight on becoming a professional artist and cultivating the skills that are necessary for being successful in the arts world.
 The magazine covers a large variety of different topics in each issue, including art marketing, sales techniques, exhibition presentation, communication skills, art law and portfolio development.
 It is published by Turnstile Media Group and is based in Orlando, Florida.
Kraken Opus is a publishing company operating from Guernsey in the Channel Islands; London, United Kingdom; and the United Arab Emirates.
 The company produces premium, outsized editions on subjects including sports teams and celebrities, and on broader topics including the Muslim hajj.
 The company describes its publications, which are produced in limited editions retailing for up to £1m, as "works of art".
Issues in Environmental Science and Technology is a book series published by the Royal Society of Chemistry, published twice a year.
 Each issue's content focuses on a specific theme topic.
 The series is written by worldwide experts in various specialist fields, and covers broader aspects of the science (such as economics and politics) as well as the narrower chemistry of environmental science.
 It aims to assess possible practical solutions to perceived environmental problems.
 The Editors Commission will review articles from authors that may come from industry, public service and academia.
Essence is a monthly magazine for African American women between the ages of 18 and 49.
 It is the only magazine that focuses on reaching an audience of black women, revolves around the black woman experience, and has remained for a long period of time.
 The magazine covers fashion, lifestyle and beauty, with an intimate girlfriend-to-girlfriend tone, and its slogan "Fierce, Fun, and Fabulous" suggests the magazine's goal of empowering African-American women.
 The topics the magazine discusses range from celebrities, to fashion, to point-of-view pieces addressing current issues in the African-American community.
 A number of its readers engage closely and personally with the publication, and it claims to be the magazine "for and about Black women".
Singapore Business Review is a business magazine that is published by Charlton Media Group.
 It has an audited circulation of 26,000 and a readership of 83,088 readers in Singapore and regionally.
 The magazine covers a wide array of topics and focuses on the Singaporean business landscape.
 The magazine covers conferences, roundtables and events held in Singapore that are related to the business environment in Singapore.
The Wisconsin Engineer is a student run magazine and registered non-profit 401(C)3 corporation.
 The staff, all volunteers, are students at the University of Wisconsin-Madison.
 The magazine covers topics in modern science and engineering, with a particular focus on University of Wisconsin-Madison faculty research and student achievements.
 Most articles are written to be mainly informative, yet the magazine occasionally publishes opinion articles and satire articles related to engineering topics or controversies centered around the University of Wisconsin-Madison.
 The Wisconsin Engineer is published four times a year seasonally, and distributed in print across the University of Wisconsin-Madison campus.
 The magazine offers paid subscriptions and, more recently, posts the full content of articles on their website.
 The Magazine has remained relatively local in its coverage, allowing it to foster relationships with professional organizations such as the Wisconsin Society of Professional Engineers.
Variety is a weekly American entertainment trade magazine and website owned by Penske Media Corporation.
 It was founded by Sime Silverman in New York in 1905 as a weekly; in 1933 it added Daily Variety, based in Los Angeles, to cover the motion-picture industry; in 1998 it brought out Daily Variety Gotham, based in New York.
 Variety.com features breaking entertainment news, reviews, box office results, cover stories, videos, photo galleries and more, plus a credits database, production charts and calendar, with archive content dating back to 1905.
 The last daily printed edition was put out on March 19, 2013.
 "Variety" originally reported on theater and vaudeville.
Danny Sullivan is California-based technologist, journalist and an entrepreneur.
 He is the Chief Content Officer at Third Door Media, and co-founder of "Search Engine Land", an industry publication that covers news and information about search engines, and search marketing, SEO and SEM topics.
 Third Door Media also produces "Marketing Land", a sister website that covers broader digital marketing topics including social media, display advertising, email marketing, analytics, mobile, and marketing technology.
 "Search Engine Land" and "Marketing Land" are owned by Third Door Media, of which Danny Sullivan is partner and chief content officer.