Argentine cumbia group Ke Personajes has scored its first Billboard No. 1 with "De la A a la Z," a collaboration with veteran Mexican band Los Ángeles Azules, which climbs 3-1 on the Regional Mexican Airplay chart dated 1 August. Both acts described the milestone as an emotional and career-defining achievement, with Ke Personajes' frontman Emanuel Noir saying it confirmed their ambition to take cumbia worldwide, and Los Ángeles Azules calling the pairing one of their most enjoyable collaborations.

The track reached the summit after a 23% rise in US audience impressions to 6.9 million during the week ending 23 July, according to Luminate. Released on 13 May via Virgin Music Latin, it marks Ke Personajes' first appearance on the chart since debuting in June, while giving Los Ángeles Azules their 29th career chart entry and eighth No. 1, following their February hit "Si Sabes Contar" with Luck Ra and Yami Safdie. The song is also climbing elsewhere, moving 7-2 on the overall Latin Airplay chart, 25-16 on Hot Regional Mexican Songs, and 44-22 on Hot Latin Songs.