Problem: Patti Ann LuPone (born April 21, 1949) is an American actress and singer, best known for her work in stage musicals. She is a two-time Grammy Award winner and a two-time Tony Award winner. She is also a 2006 American Theater Hall of Fame inductee. LuPone began her professional career with The Acting Company in 1972 and made her Broadway debut in Three Sisters in 1973.

Among LuPone's film credits are Fighting Back, Witness, Just Looking, The Victim, Summer of Sam, Driving Miss Daisy, King of the Gypsies, 1941, Wise Guys, Nancy Savoca's The 24 Hour Woman and Savoca's Union Square (in post-production, late 2010), Family Prayers, and City by the Sea. She has also worked with playwright David Mamet on The Water Engine, the critically acclaimed State and Main, and Heist. In 2011, the feature film Union Square, co-written and directed by the Sundance Film Festival's Grand Jury Award Winner, Nancy Savoca, was premiered at the Toronto International Film Festival. In it, LuPone co-starred with Mira Sorvino, Tammy Blanchard, Mike Doyle, Michael Rispoli and Daphne Rubin-Vega.  She played Lady Bird Johnson in the TV movie, LBJ: The Early Years (1987). LuPone played Libby Thatcher on the television drama Life Goes On, which ran on ABC from 1989 to 1993. In the 1990s she had a recurring role as defense attorney Ruth Miller on Law & Order. She has twice been nominated for an Emmy Award: for the TV movie The Song Spinner (1995, Daytime Emmy Award nominee), and for Outstanding Guest Actress in a Comedy Series on Frasier in 1998. She had a cameo as herself that year on an episode of Saturday Night Live hosted by Kelsey Grammer.  LuPone's TV work also included a recurring role on her cousin Tom Fontana's HBO series in its final season, Oz (2003). She appeared as herself on a February 2005 episode of Will & Grace. She also appeared on the series Ugly Betty in March 2007 as the mother of Marc St. James (played by Michael Urie). LuPone had a recurring guest role as Frank Rossitano's mother on 30 Rock. LuPone appeared as herself in the season two finale of the television series Glee.  LuPone guest starred on Army Wives on July 8, 2012. She reunited with fellow guest star Kellie Martin as her mother once again. LuPone appeared in the 2013 film Parker, an action-thriller.  In 2013, LuPone was cast in the third season of the FX series American Horror Story as Joan Ramsey, a religious mother with a hidden past, and played herself in the third season of HBO's Girls. In 2015, she appeared in several episodes of the Showtime horror series Penny Dreadful as a cantankerous yet powerful white witch. She returned to the show in 2016 in the role of Dr. Seward, an alienist aiding Eva Green's character. Seward is an adaptation of John Seward from Bram Stoker's Dracula, and claims to be a descendant of Joan Clayton, the character LuPone portrayed in the second season. Also in 2016, she began appearing in Steven Universe as the voice of Yellow Diamond.

For what role?

Answer with quotes: for the TV movie The Song Spinner (1995, Daytime Emmy Award nominee), and for Outstanding Guest Actress in a Comedy Series on Frasier in 1998.

Question:
Helloween are a German power metal band founded in 1984 in Hamburg, Northern Germany by members of bands Iron Fist and Gentry. Its first line-up consisted of singer and rhythm guitarist Kai Hansen, bass guitarist Markus Grosskopf, lead guitarist Michael Weikath, and drummer Ingo Schwichtenberg. After the release of a self-titled EP and their debut album Walls of Jericho in 1985, it expanded into a quintet with the addition of singer Michael Kiske, Hansen choosing to focus on guitar instead. Under this line-up, they released the Keeper of the Seven Keys albums (1987 and 1988), which established Helloween as a notable heavy metal band and led to the creation of the power metal subgenre.
The year 2000 saw the release of The Dark Ride, a more experimental and darker album than their previous releases. It came complete with downtuned guitars and a gruffer singing style from Deris. Immediately following the tour, Helloween parted ways with guitarist Roland Grapow and drummer Uli Kusch. One version of events states that Weikath, Deris, and Grosskopf felt that Kusch and Grapow, in particular, were spending more time on and paying more attention to their new side-project, Masterplan (Grapow's output on Helloween albums had dropped to barely one song per album by that point); since the others believed that Kusch and Grapow were not one hundred percent dedicated to Helloween, they were dismissed.  They were replaced by guitarist Sascha Gerstner (ex-Freedom Call, Neumond) and drummer Mark Cross (ex-Metalium, Kingdom Come, At Vance, Firewind), culminating with the recording of another studio album, titled Rabbit Don't Come Easy, in 2003. The band met Sascha via a recommendation by producer Charlie Bauerfeind. According to Grosskopf, one day he was recording something with Freedom Call "and later on we called him up and he went to first meet Weiki because it was very important that Weiki finds a player that he can play with and also communicate and understand. [...] So we got him on the island where we recorded and let him hang out with us a little and then he decided 'Good, let's go'." Later in 2012, on an interview with Metal Shock Finland's Chief Editor, Mohsen Fayyazi, Roland stated:  Cross could not finish the album due to mononucleosis, completing only two tracks; the drum tracks were completed by Motorhead's Mikkey Dee. Stefan Schwarzmann, former drummer of Running Wild and Accept would shortly thereafter take over the drumming duties. Despite a somewhat tepid response to the album, Helloween nonetheless completed a successful world tour, highlighted by the return of classic songs such as "Starlight", "Murderer", "Keeper of the Seven Keys" and "How Many Tears" to the setlist. Additionally, the band toured the United States for the first time since 1989, playing to sold-out crowds at nearly every venue.
Answer this question using a quote from the text above:

Who was replaced during this time period?

Answer:
the others believed that Kusch and Grapow were not one hundred percent dedicated to Helloween, they were dismissed.