Members of Fórmula Abierta: From the Four of OT to the Current Trio

The members of Fórmula Abierta are now Javián, Marta Sango and Naim Thomas, who have made up the group since September 2025. Before that came a quartet born out of Operación Triunfo in 2002, two reunions and quite a few changes. It is best seen era by era, with the joinings and exits to hand.

Era 1, 2002 to 2004: the quartet

Geno Machado, Mireia Montávez, Javián and Àlex Casademunt open the group with Aún hay más, from June 2002. It is a Latin pop album, with sing-along choruses, that reaches number 3 in sales and goes platinum. It produced Te quiero más, the song of the summer.

The next two albums, La verdad (2003, position 25) and Fórmula 04 (2004, position 85), show a falling curve in the charts. Miguel Ángel Silva passes through the group in that stretch.

Changes in this era:

• 2002: the four originals join.
• 2003: Miguel Ángel Silva joins.
• 2004: Geno Machado and Mireia Montávez leave and the era closes.

Era 2, 2016 to 2021: the reunion

In May 2016 a compilation comes out on Universal Music and the four originals get back together. In 2017 they announce their return to music, but Mireia Montávez withdraws for professional reasons within a few weeks. Geno Machado comes back that year and stays until 2020.

Sin conexión is released in 2018 and Si tú vuelves in 2019. In 2020 Geno leaves and Tessa Bodi joins.

Changes in this era:

• 2016: the four originals return.
• 2017: Mireia Montávez withdraws; Geno Machado returns.
• 2020: Geno Machado leaves and Tessa Bodi joins.
• March 2021: Àlex Casademunt dies and the project is wound up.

In July 2021 Contigo me quedo arrives, one of the last tracks of that era.

Era 3, 2023 to 2024: another version

In 2022 Geno Machado wants to take up the name again and Javián decides not to return. The record label brings in Verónica Romero and Enrique Anaut. In January 2023 a tour for the 20th anniversary is announced and in February a new version of Te quiero más comes out.

Changes in this era:

• 2023: Verónica Romero and Enrique Anaut join; Geno Machado returns.
• November 2024: Geno Machado leaves again.

Era 4, since 2025: the trio

In September 2025 the group reappears with Javián, Naim Thomas and Marta Sango. Marta joins on 26 September. It is presented as a temporary line-up, with one-off shows and no long tour announced that can be verified. The sensible thing is to follow the official social media before planning a trip.

By instrument, or rather, by voice

All the members have been singers, so the useful criterion is not the instrument but the register of each voice and the period in which it sounded. Geno and Mireia give the colour of the first album. Àlex and Javián carry the reunion. Verónica and Enrique define the 2023 era. Marta and Naim open the 2025 one.

Which era to listen to first

The first, without doubt, and within it Aún hay más in full. Then the singles from 2018 and 2019, which show a calmer group. The 2023 era is useful for comparing versions of Te quiero más and little else. The 2025 one, for the moment, is better seen live than on record.

Final assessment

Fórmula Abierta is the typical case of a group that lives off three summer songs and the memory of a generation. No line-up lasted more than a few years. That said, the 2002 stretch is the one that holds up best over time and deserves more attention than any later reunion.

Which album or era to skip

Fórmula 04, from February 2004, can be left for last: it reached position 85 and closed a first era that already showed fatigue. The 2023 re-recording of Te quiero más is good for comparing, but never for starting.

Who it is for and who it is not

Yes for anyone who wants 2000s Latin pop, the memory of a TV talent contest and beach songs. No for anyone expecting a long career with new discography: the 2025 trio was presented as temporary and no long tour is confirmed.

Comparison between eras

The 2002 quartet had one album with real reach, three summer singles and a single stable line-up for two years. The 2016 reunion had more affection than sales. The 2023 one worked as a tribute to the repertoire. The 2025 one is still taking shape. In that order, the first wins by a mile on songs and the second on emotional weight.

A dry-humoured warning

Anyone who wants to show off knowing who sang each year will need a notebook, or a lot of patience. Geno Machado, for example, has three separate spells in the group and a final exit in November 2024. That is enough to show that in Fórmula Abierta the door never quite closed.