Question: Are Dickie Peterson and Fher Olvera both musicians?

Context articles: Lo Esencial de Maná
Maná en Vivo
Amor Clandestino
Fher Olvera
Paul Whaley
Dickie Peterson
Corazón Espinado
El Verdadero Amor Perdona
Maná
Lluvia al Corazón

Lo Essential de Maná is a three CD box set of the first three studio albums under recording label WEA Latina from Mexican rock band Maná.
 Since they burst on the scene from Guadalajara, Mexico, in the early 1990s, Maná have reigned as the premier Latin rock band of our time.
 Led by the powerful and passionate vocalist-composer Fher Olvera, drummer Alex González, guitarist Sergio Vallín, and bassist Juan Diego Calleros blend American power rock with Hispanic folk idioms and Afro-Caribbean rhythms.
 This three-CD box set compilation contains the band's greatest hits, from their début album, "Falta Amor" to their third album "Cuando Los Ángeles Lloran".
 A total of 37 songs from their favorites appear, including "Vivir Sin Aire," "Dónde Jugarán los Niños?"
, and the reggae-tinged "Selva Negra."
 Other favorites, such as "La Chula" and "Como Te Deseo," are remixed as pop-dance numbers.
Maná en Vivo (in English: Maná Live) is the first live album (and seventh overall) released by the Mexican rock band Maná.
 After Iván González and César López left the group, Fher Olvera, Alex González, and Juan Calleros continued to perform as a trio.
 They recorded "Maná en Vivo" in August and September 1994 during their ¿Dónde Jugarán Los Niños?
 World Tour.
 The double CD includes material from concerts at the Universal Amphitheatre in Los Angeles; the Sports Arena in San Diego; the Aragon Ballroom in Chicago; the Teatro Gran Rex in Buenos Aires, Argentina; the Estadio de Chile in Santiago, Chile; and the Sala Estandard in Barcelona, Spain.
 Olvera, González, and Calleros were joined by Carlos Orozco on guitar, Sheila Ríos on vocals, and Juan Carlos Toribio on keyboards.
"Amor Clandestino" (English: "Clandestine Love") is the second single from Mexican Latin pop/Rock en Español band Maná's eighth studio album "Drama y Luz".
 The song is produced by Fher Olvera & Alex González.
 The song reached number-one on the Hot Latin Songs chart.
 The song also reached number-one on the Mexican Airplay Charts according to "Billboard" International.
José Fernando Emilio "Fher" Olvera Sierra, was born in December 8, 1959, (Guadalajara, Jalisco, Mexico).
 He is the secondary guitarist, composer, and lead singer for the Mexican rock band Maná, the most successful Latin American band of all time with over 40 million albums sold worldwide.
Paul Whaley (born January 14, 1946) is an American drummer best known as the drummer for rock band Blue Cheer.
 He was the son of country music singer Paul Whaley Sr.
 He grew up in the towns of Vallejo and Winters California.
 He played drums with a Davis, California band called the Oxford Circle.
 Whaley is credited on the Oxford Circle album "Live at the Avalon 1966".
 When he left the Oxford Circle to join Blue Cheer in 1967, the former band dissolved.
 He was the longest-standing member in Blue Cheer other than founder Dickie Peterson in the band when it broke up in late 2009, following Peterson's death at age 63.
Richard Allan Peterson (September 12, 1946 – October 12, 2009) was an American musician, best known as the bassist and lead singer for Blue Cheer.
 He also recorded two solo albums: "Child of the Darkness" and "Tramp".
"Corazón Espinado" (English: "Wounded Heart'" or more literally, "Heart Stung by Thorns") is a song by Santana and the Latin rock group Maná.
 The song was written, produced and sung by Fher Olvera, and co-produced by Alex González.
 It was released on the Santana album "Supernatural" in 1999, and became a massive hit in Spanish-speaking countries.
 It won the "Record of the Year" and "Best Rock Performance by a Duo or Group" at the 2000 Latin Grammy Awards.
 In addition, Santana and Maná performed the song at the Latin Grammys.
"El Verdadero Amor Perdona" (English: "True Love Forgives") is the third single from Mexican Latin pop/Rock en Español band Maná's eighth studio album "Drama y Luz".
 The song also features a bachata duet with Prince Royce on their Deluxe Edition of Drama y Luz album.
 The song is produced by Fher Olvera & Alex González and won for Collaboration of the Year and Rock/Alternative Song of the Year at the Premio Lo Nuestro 2013.
Maná (Spanish: "manna") is a Mexican Rock music band from Guadalajara, Jalisco.
 The group's current line-up consists of vocalist/guitarist Fher Olvera, drummer Alex González, guitarist Sergio Vallín, and bassist Juan Calleros.
 Maná has earned four Grammy Awards, eight Latin Grammy Awards, five MTV Video Music Awards Latin America, six Premios Juventud awards, nineteen Billboard Latin Music Awards and fifteen Premios Lo Nuestro awards.
 It is considered by many as the most influential and successful Latin American band of all time with over 40 million albums sold worldwide.
"Lluvia al Corazón" (English: "Rain to the Heart") is the first single from Mexican Latin pop/Rock en Español band Maná's eighth studio album "Drama y Luz".
 The song is produced by Fher Olvera & Alex González.