The 10 original songs by Ale on this digital album were written in the Brazilian countryside, in a region where waterfalls and mountains abound, and, according to rumors, aliens like to park their spaceships.

In addition, it is worth mentioning that the work was done in the Esperantist property of Bona Espero, where since the year 1957 Esperantists have educated and protected children whose families couldn’t take care of them.

The album Tro presents a journey through various rhythms and styles, and the words bring us from natural farts to cosmic adventures.

Ale played the songs with a guitar only for the stars and friends, until JCP (Jean-Claude Patalano), of the band Vojaĝo, agreed to produce them in France.
All voices were recorded in Alto Paraíso de Goiás, during the flowering of ipê amarelo (Handroanthus albus), in Artemisia.
Jean-Claude Patalano arranged the album in France.

Ĵomart kaj Nathaŝa produced the beautiful version of Simple Words' in Sweden.

And besides the musicians of Vojaĝo, Gilles Bénard, Didier Kerboull, Didier Jéol, and Jean-Claude Patalano, the album counted on the collaboration of Anna Burenius of La Perdita Generacio (Sweden), Ĵomart kaj Nataŝa (Sweden), Amir (Denmark/Bosnia), Flávio Fonseca (Brazil), and the bass player of Strika Tango, Pancho Corrao (Argentina).

In this album the author, composer, and main voice is:
Ale Kosabela: Alejandro Cossavella.

With the participation of the musicians of Vojaĝo in France:
Gilles Bénard: keyboards.
Jean-Claude Patalano: musical arrangements of the album, tenor and soprano saxophones, clarinet, and concert flute, bottles and voice in Kie oni aŭdas la flutojn, spiro el perdita koro and Malproksimaj limoj.
Didier Kerboull: bass.
Didier Jéol: drums.

In Argentina:
Pancho Corrao: bass in Sekretaj formoj de plezur' and La du hundoj.

In Brazil:
Flávio Fonseca: guitar in Modernaj tempoj.

In Denmark/Bosnia:
Amir Hadziahmetovic: voice in Diri and Rajdu sur la luma ĉevalo'.

In Sweden:
Anna Burenius: voice in Sekretaj formoj de plezur' and Floroj de la kosma ĝarden'.
Jomart kaj Nathasha: interpretation and musical layout of a version of Simplaj vortoj.

Registered in Brazil: Júnior Tana Mohandas Amadeus at Studio Artemisia in Alto Paraíso de Goiás.
Musical arrangements, recording, and mixing at Audiopole Studio in Ramonville Saint-Agne (Occitania/France): Jean-Claude Patalano.

Mastering: Triboulet at Studio de La Trappe in Donneville (Occitania/France).

Ideas and cover concept: Alejandro Cossavella.
Graphics and final cover art: Annabelle Henry in Lima (Peru).

Thanks from Ale to:
Jean-Claude Patalano and his band Vojaĝo, ĴomArt kaj Nataŝa, Anna Burenius, Amir Hadziahmetovic, Pancho Corrao, Nicolás Ortolá, Bertil Wennergren, Flávio Fonseca, Ursula and Giuseppe Grattapaglia, Vanda and Ulisses Riedel Resende, Sandra Alencar, Paulo Nascentes, Anna Lobo Carvalho, Fernando Maia Jr., Daniel Cossavella, Martin Wiese, Júnior Tana Mohandas Amadeus, Juliana Eva, Marcelo Daguerre, Aguś Mozer, Jano Lacava, Maricel Cicala, Eduardo Cossavella, Clara y Coco, Irek Bobrzak, Rogener Pavinski, Rosa Maria Riquelme Civit, Yoni Goldstein, Andrew Benz, Sebastián Álvarez, Meredith Zielke, Emiliano Luz Iriarte, Luz Marina Alcantara, María, León (one of the two dogs, in memoriam), Bona Espero/Unio Planeda, and of course Flo.