Musa Keys & Optimist Music ZA Deliver a Motivational Anthem with Go Harder

Go Harder is more than a club track – it’s a mantra for momentum. The latest single from South African hitmaker Musa Keys, featuring rising talent Optimist Music ZA, arrives as a bold, groove-charged anthem that blends Afro-tech intensity with Amapiano fluidity, all while carrying a motivational message at its core. It’s the kind of record that fuels ambition and movement – whether you’re grinding at the gym, powering through a late-night work session, or lighting up the dancefloor.

Musa Keys – known for his romantic and soulful production on past hits – takes a more edgy, percussive route here. From the first beat, Go Harder radiates momentum. The rhythm is tight and propulsive, crafted with crisp claps, rolling log drums, and synth elements that shimmer like sparks flying off steel. There’s a relentless energy in the arrangement – every layer pushing you forward, commanding your body to stay in motion.

Vocally, Optimist Music ZA delivers a standout performance that lives up to his name. His tone is melodic but assertive, carrying a message of resilience and self-belief. The lyrics are minimalist but powerful, revolving around the central phrase – Go Harder – which quickly becomes a motivational hook, a chant, a declaration. It’s not just catchy; it’s energizing. He sings like someone who’s been through the fire and is now urging you to keep moving through yours.

You can listen to Musa Keys – Go Harder ft. Optimist Music ZA here.