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Tracklist Hide Credits

A1	Va A Estallar El Obús Written-By – J.L. Serrano*	7:22
A2	Cállate Written-By – F. Laguna*, J.L. Serrano*	3:10
A3	La Escalera Written-By – F. Laguna*, J.L. Serrano*	3:12
A4	Dosis De Heavy Metal Written-By – F. Laguna*, J.L. Serrano*	3:48
B1	Petrodólares Written-By – F. Sánchez*	4:34
B2	Pesadilla Nuclear Written-By – F. Laguna*, J.L. Serrano*	4:26
B3	Préstame Amigo Tu Cabeza Written-By – F. Laguna*, J.L. Serrano*	4:00
B4	Solo Lo Hago En Mi Moto Written-By – F. Sánchez*, J.L. Serrano*	4:45

Companies, etc.

• Phonographic Copyright (p) – BMG Rights Administration (Spain) S.L.U.
• Copyright (c) – BMG Rights Administration (Spain) S.L.U.
• Recorded At – Estudios Escorpio
• Manufactured By – Sony Music Entertainment International Services GmbH
• Marketed By – Sony Music Entertainment España, S.L.
• Distributed By – Sony Music Entertainment España, S.L.

Credits

• Arranged By – Tino Casal*, Obus
• Artwork – Manuel Cuevas
• Bass, Backing Vocals – Juan Luis*
• Drums – Fernando*
• Engineer – Tino Azores
• Engineer [Assistant] – Tony Jiménez
• Guitar, Backing Vocals – Paco*
• Keyboards, Effects [Sound Effects Technician] – Luis Cobos
• Photography By – Oscar Vallina
• Producer – Tino Casal*, Luis Soler
• Vocals – Fortu

Notes

Remastered edition with the original artwork.

Front cover sticker says:
"40 Aniversario
1975 · 2015
Chapa - Discos
Audio Remasterizado
Arte Original
Edición Limitada"

Barcode and Other Identifiers

• Barcode (Printed): 8 88750 92461 2
• Barcode (Scanned): 888750924612
• Rights Society: BIEM / GEMA

Other versions

Category	Artist	Title (Format)	Label	Category	Country	Year
HS-35052, HS-35.052	Obus	Preparate ‎(LP, Album)	Chapa Discos, Chapa Discos	HS-35052, HS-35.052	Spain	1981
SLIN-3120-B	Obus	Preparate ‎(LP, Album)	Discosa	SLIN-3120-B	Argentina	1982
CH-5052	Obus	Preparate ‎(Cass, Album)	Chapa Discos	CH-5052	Spain	1981
GM-200.7018	Obus	Preparate ‎(LP, Album)	Discosa De Venezuela	GM-200.7018	Venezuela	1982
50612174	Obus	Preparate ‎(CD, Album, RE)	Zafiro, BMG España	50612174	Spain	Unknown