Question: Which musician was part of more bands, Charlie Simpson or Shaun Morgan?

Context paragraphs:
Breakdown (Seether song): "Breakdown" is the third track and the third single from Seether's third album, "Finding Beauty In Negative Spaces".  Shaun Morgan has stated that the song is about his former girlfriend Amy Lee, but other sources reference a more recent relationship.  To further the point, Morgan has been quoted saying "Amy and I, at our worst moments, were still better than this last girl and I at our best moments".

Call Me When You're Sober: "Call Me When You're Sober" is a song by American rock band Evanescence recorded for their second studio album "The Open Door".  Wind-up Records released it as the album's lead single on September 4, 2006; this release was preceded by the song's Internet leak and its earlier distribution to radio stations on July 31.  The track was written by group members Amy Lee and Terry Balsamo, while Dave Fortman handled its production.  Lee revealed that the song was inspired by an unsuccessful relationship, which was later confirmed to be the one with Shaun Morgan, lead singer of the band Seether, who had undergone rehabilitation treatment for battling addictions at the time of its release as a single.  The track is a nu metal, symphonic rock and electropop piano ballad which lyrically talks about a female protagonist terminating a relationship with a love interest who suffers from an addiction.

Broken (Seether song): "Broken" is a song by South African post-grunge and alternative metal band Seether, featuring American singer Amy Lee, the lead singer of Evanescence and then-girlfriend of Seether vocalist Shaun Morgan.  It was recorded in 2004 and was later included in "Disclaimer II".  This version includes electric guitar and violins.  It peaked at number 20 on the "Billboard" Hot 100 and at number 3 on the ARIA Charts.  It was later certified Gold by the Recording Industry Association of America (RIAA) and Platinum by the Australian Recording Industry Association (ARIA).  It is the band's biggest pop hit and the band's only top 40 hit, reaching number 20 on the "Billboard" Hot 100 chart.  Although, until the 2014 release of "Words as Weapons", it was often considered Seether's most popular track and the only song to enter and crossover to the pop and adult contemporary charts, it is not their highest-charting single on the Mainstream Rock Tracks chart and Modern Rock Tracks chart where a few singles, such as "Fine Again" and "Fake It", charted higher.  Despite this, it was the most played song on most rock radio formats due to the pop success of the song.  In addition, it still charted highly, peaking at number 9 on the Mainstream Rock Tracks chart and number 4 on the Modern Rock Tracks chart.

McBusted: 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.

Andy C. Saxton: Andy C. Saxton is a musician, producer and film composer from Watford, United Kingdom.  He has worked alongside many famous bands and musicians including Bon Jovi, Sepultura, Alexisonfire, Jimmy Eat World.  Saxton was also the bassist for the Progressive Metal band Cry For Silence for 8 years with the new Slipknot bassist Alessandro Venturella.  Saxton has played on albums with Ryan Richards from Funeral For a Friend and Charlie Simpson from Busted/Fightstar

Charlie Simpson: 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.

Fightstar: 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.

Shaun Morgan: Shaun Morgan Welgemoed (] , born 21 December 1978), known publicly as Shaun Morgan, is a South African musician, singer, songwriter and guitarist for the South African rock band Seether.

Rise Above This: "Rise Above This" is the second single from Seether's album "Finding Beauty in Negative Spaces".  It is the sixth track on the album and became the band's second consecutive number-one song on the U.S. Modern Rock chart.  Seether's vocalist Shaun Morgan has stated that the song is about his late brother, Eugene Welgemoed, and was written before his suicide.  "Rise Above This" was written to bring Eugene out of a depression.

Busted (band): 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.

Supporting paragraphs: Charlie Simpson Shaun Morgan
Answer: Charles Robert "Charlie" Simpson