What is Anni-Frid Lyngstad?
{{Infobox royalty | name = Princess Anni-Frid | title = Dowager Countess of Plauen | image = Anni-Frid Lyngstad, May 2013.jpg | image_size = | caption = Lyngstad at the opening of [[ABBA The Museum]], 6 May 2013 | birth_name = Anni-Frid Synni Lyngstad | birth_date = {{birth date and age|1945|11|15|df=y}} | birth_place = Bjørkåsen, [[Ballangen]], Norway | spouse = {{plainlist| *{{marriage|Ragnar Fredriksson|1964|1970|reason=divorce}} *{{marriage|[[Benny Andersson]]|1978|1981|reason=divorce}} *{{marriage|[[Prince Heinrich Ruzzo Reuss of Plauen]]|1992|1999|reason=died}} }} | issue = 2 | house = [[House of Reuss|Reuss]] (by marriage) | signature = Anni-Frid Lyngstad signature.svg | module = {{Infobox musical artist | embed = yes | years_active = 1958–present | genre = {{flatlist| *[[Pop music|Pop]] *[[jazz music|jazz]] }} | origin = [[Torshälla]], [[Eskilstuna]], Sweden | alias = Frida | label = {{plainlist| *[[His Master's Voice]] <small>(1967)</small> *[[Columbia Graphophone Company|Columbia]] ([[EMI]]) <small>(1968–1972)</small> *[[Polar Music|Polar]] <small>(1972–1984)</small> *[[Warner Music Sweden|Anderson]] <small>(1996)</small> }} | instrument = {{flatlist| *[[Singing|Vocals]] *[[piano]] }} | associated_acts = {{flatlist| *[[ABBA]] *[[Agnetha Fältskog]] *[[Benny Andersson]] *[[Björn Ulvaeus]] *[[Jon Lord]] *[[Phil Collins]]}} }} }} '''Anni-Frid Synni, Dowager Princess Reuss of Plauen''' ({{lang-de|Anni-Frid Synni, Prinzessin Reuß von Plauen}}; [[née]] '''Lyngstad''', born 15 November 1945), commonly known as '''Frida Lyngstad''' ({{IPA-no|ˈlyŋstɑ|lang}}; {{IPA-sv|ˈlʏŋstɑːd|lang}}), or [[Mononymous person|just by the mononym]], '''Frida''' ({{IPA-sv|²friːda|lang}}), is a Norwegian-born [[Sweden|Swedish]] [[singer-songwriter]], and [[Environmentalism|environmentalist]].<ref name=env>{{cite book |title=The Environment Encyclopedia and Directory