Question: When was the German vocalist born who had lineup with Dawn Road?

Context paragraphs:
Dennis Rowland: Dennis Rowland is a jazz vocalist born and raised in Detroit.  Having grown up in a household of jazz enthusiasts, Rowland developed an appreciation for Jazz music at an early age.  At the age of five or six Rowland heard the vocals of Joe Williams of the Count Basie Orchestra, which has influenced his approach to singing ever since.  Rowland's voice is rich and deep, and throughout the early 1970s, Rowland worked Detroit's local jazz and acting scene.  In 1977 Rowland was hired by Count Basie as a vocalist on his tours, filling the same role his idols Joe Williams and Jimmy Rushing had occupied for so many years.  For Rowland, it was a dream come true and he would tour with Basie for the following seven years.  During his time with Basie, Rowland had the chance to share the stage with such icons as Sarah Vaughan, Ella Fitzgerald and Tony Bennett.  Rowland was seen recently as Jimmy Baker in the film "Real Gone Cat" by film director Robert Sucato.  He currently resides and performs regularly in Phoenix, Arizona.

Michael Bormann: Michael Bormann is a German vocalist.  Since the first recording he had made with a band, he has been involved with several groups as their lead vocalist, having accepted contracts to record his vocals on albums rather than being a full time member of the bands.  However, he was a founding and longtime member of Germany's hard rock band, Jaded Heart.

Alfreda Gerald: Alfreda Gerald is an American vocalist born in Morganton, North Carolina.  Upon graduating from college, Gerald sang professional opera with the London Philharmonic Orchestra, the New York Philharmonic Orchestra, and the North Carolina Symphony Orchestra.  She has both a classical and R&B background and has toured and/or recorded with such artists as Warren Haynes, Wes King, Spectrum, The Gap Band, Deleon Richards, Michelle Malone, and Taliesin Orchestra.  Alfreda is known for her powerful vocals & incredible stage performances.  She's heard as the woman singing nonsensical lyrics to the theme song of the 1994 cult classic Cartoon Network/Adult Swim series, "Space Ghost Coast to Coast".  Her vocals to the series theme song was her just reacting to the music being played in front of her, of the composer of the shows theme, Sonny Sharrock.  She has been a featured vocalist with Yanni on several of his singles, most recently performing during the 2003-2004 "Ethnicity" and 2005 "Yanni Live!"  world tours, and appears in the live concert films "Tribute", and "Yanni Live!  The Concert Event".  Alfreda is currently managed by Shakir Entertainment Management in New York City.  Ms. Gerald recently appeared in the Tyler Perry feature film "Madea's Witness Protection" performing "Oh happy day".  Alfreda is currently in studio working on a couple of dance recordings with music producers, that'll be released 2012-13.

Klaus Meine: Klaus Meine (born 25 May 1948) is a German vocalist, best known as the lead singer of the hard rock band Scorpions.  He and guitarist Rudolf Schenker are the only two members of the group to appear on every Scorpions album.  Meine was placed at #22 on Hit Parader's Top Heavy Metal Vocalists of All Time list in 2006.

Lionel Loueke: Lionel Loueke (born 27 April 1973) is a guitarist and vocalist born in Benin.  He moved to Ivory Coast in 1990 to study at the National Institute of Art.  He attended the American School of Modern Music in Paris, France from 1994–1998.  In 1999, Loueke was awarded a scholarship to Berklee College of Music, where he earned a degree in Jazz Performance in 2000.

Jürgen Rosenthal: Jürgen Rosenthal is a German rock drummer.  He was a member of Uli Jon Roth's band Dawn Road, but became a member of the Scorpions, along with Roth and Francis Buchholz, when Dawn Road was annexed into a lineup with Klaus Meine and Rudolf Schenker.  He appeared on one album, "Fly to the Rainbow", before having to leave to do his compulsory service with the Army.  He later appeared in Eloy, and wrote the lyrics for their successful 1977 album "Ocean".  He also wrote the lyrics to another successful album "Dawn".

Ian Crawford (musician): Ian Miles Crawford (born September 29, 1988) is an American musician and vocalist born in Eugene, Oregon.  He is most prominently known being a guitarist and backing vocalist for groups including The Cab, Panic!  at the Disco, Never Shout Never, and The Academy Is... In 2016, he founded the rock and roll group The Contestants, which released their debut studio album, "No Contest", in May 2016.

Tamaryn: Tamaryn (born Tamaryn Brown) is a vocalist born in New Zealand and now based in the United States.  Since 2008, Tamaryn has released three studio albums, an EP and several singles.  Her multifaceted style melds various genres such as dream pop, shoegaze, post-punk, gothic rock, synth-pop and electronic.

Angela Gossow: Angela Nathalie Gossow (born 5 November 1974) is a German vocalist, best known as the former lead vocalist for the Swedish melodic death metal band Arch Enemy.  Her other previous bands include Asmodina and Mistress.  She is considered to be one of the few successful female metal singers to use growling as her primary singing style.

Encore une fois: "Encore une fois" (French for "one more time") is a song by German DJ team Sash! .  It was released in January 1997 as the second single from the album, "It's My Life - The Album".  It found huge success in clubs throughout the world and is considered one of Sash! 's biggest hits to date.  The song also features vocals in French by German vocalist Sabine Ohmes.

Supporting paragraphs: Jürgen Rosenthal Klaus Meine
Answer: 25 May 1948