Question: Charlie Simpson and Yang Seung-ho are both in musical groups consistiing entirely of which sex?

Context articles: Yang Seung-ho
McBusted
Down Down Down
Propellers (band)
List of Pakistani musical groups
Busted (band)
Fightstar
Charlie Simpson
Rock N Roll Grandpa
When We Were Lions

Yang Seung-ho (양승호; born October 16, 1987), is a South Korean idol singer, dancer, actor, model and the leader of Korean male group MBLAQ, currently active in South Korea under Will Entertainment.
McBusted were an English pop-punk supergroup composed of members from bands McFly (Tom Fletcher, Danny Jones, Dougie Poynter, and Harry Judd) and Busted (James Bourne and Matt Willis).
 The only member of the original groups not participating in the new lineup was former Busted guitarist and vocalist Charlie Simpson, who instead opted to focus on his solo career and his band Fightstar.
"Down Down Down" is the debut single by English singer-songwriter Charlie Simpson, from his debut studio album "Young Pilgrim" (2011).
 It was released on 11 April 2011 as a digital download in the United Kingdom.
 The song peaked to the number 65 on the UK Singles Chart and number 9 on the UK Indie Chart.
Propellers are an indie rock/synthpop band from Royal Tunbridge Wells, Kent, England.
 The band members are Max Davenport (lead vocals), Archie Davenport (guitar), Charlie Simpson (bass guitar), Jimmy Goodwin (keyboards) and Will Wilkinson (drums).
This article contains the list of some of the past, present and forthcoming musical groups that are based in Pakistan.
 This list includes musical groups that based their music on pop, rock, jazz, traditional and classical genres and Pakistani folk music.
Busted are an English pop rock band from Southend-on-Sea, Essex, consisting of James Bourne, Matt Willis and Charlie Simpson.
 Formed in 2001, the band had four UK number-one singles, released two studio albums, "Busted" (2002) and "A Present for Everyone" (2003), one compilation album and one live album before breaking up in January 2005 following Simpson's decision to pursue a career fronting post-hardcore band Fightstar.
 They have also won two Brit Awards and won The Record of the Year in 2004 with their single "Thunderbirds", amongst other awards.
 Busted have sold over 5 million albums worldwide.
Fightstar are a British rock band from London that formed in 2003.
 The band is composed of lead vocalist, guitarist and keyboardist Charlie Simpson, guitarist and co-vocalist Alex Westaway, bassist Dan Haigh and drummer Omar Abidi.
 Generally considered a post-hardcore band, Fightstar are known to incorporate metal, alternative rock and other genres into their sound.
 During the band's early days, they were viewed sceptically by critics because of Simpson's former pop career with Busted.
 Their live shows got a more positive reaction, and their 2005 debut EP, "They Liked You Better When You Were Dead", was a critical success.
Charles Robert "Charlie" Simpson (born 7 June 1985) is an English singer, songwriter and musician.
 He is the youngest member of multi-BRIT Award-winning band Busted, and is the lead vocalist, guitarist in post-hardcore band Fightstar.
 AllMusic has noted that Simpson is "perhaps the only pop star to make the convincing transition from fresh-faced boy bander to authentic hard rock frontman".
 Simpson is a multi-instrumentalist, playing guitar, keyboard, piano and drums.
Rock N Roll Grandpa is a 2016 Korean film, directed by Lee Jang-hee.
 The film will portray a boy full of dreams who rekindles an old man's passion.
 It stars Yang Seung-ho, Ha eun-seol, Oh Kwang-rok, and more.
When We Were Lions is the debut EP by Charlie Simpson, confirmed to be followed by his first solo full-length debut album in 2011.
 In the live shows promoting Young Pilgrim he played 2 songs live from the EP which were 'If I Hide Will You Come Looking? '
 and 'Farmer & His Gun' which is also a bonus track and is a live bonus track on the iTunes bonus tracks.
 During his 'Young Pilgrim World Tour' he plays "When We Were Lions" and "Farmer & His Gun" as the encore.
 Charlie announced in January that he is releasing a video for the track 'Bullet' from the EP despite being released 3 years prior, the single is just a one off.