E-Life – I Wonder Why

Backing Vocals – Desirée Manders
Backing Vocals – Marlène Simons
Keyboards, Other [Vocal Coaching] – Andreas Lagaris
Lead Vocals – Manushka
Other [Vocal Coaching] – Holger Schwedt
Producer, Arranged By, Keyboards – The Anonymous Mis
Producer, Written-By, Performer – E-Life
Written-By – Elvis H. de Oliveira
Written-By – Remon Stotijn

Featuring, Producer, Arranged By, Written-By, Performer – The Anonymous Mis
Featuring, Written-By, Performer – Rollarocka
Featuring, Written-By, Performer – Sonny D
Featuring, Written-By, Performer – U-Niq (2)
Written-By – Nelson Silva
Written-By – Michael Parkinson
Written-By – Elvis H. de Oliveira
Written-By – Remon Stotijn
Written-By – Anthony Pengel
Written-By, Performer – E-Life