Rels B is a Spanish singer, rapper and producer from Palma de Mallorca whose work blends hip hop, R&B and pop influences. Active since the early 2010s, he gained recognition through independent releases and a series of mixtapes and albums that showcase smooth vocal delivery, melodic hooks and laid-back, groove-oriented production. His music often combines rap verses with sung choruses and features contemporary urban production techniques, chilled tempos and introspective lyrical themes. Rels B is known for an accessible, crossover approach that bridges Spanish-language rap with melodic R&B aesthetics within the modern Spanish urban music scene.