Tempo nods in the direction of L'instant de Guerlain without the citrus, pepper and slightly dirty quality of L'instant. Cleaner, more modern all around vibe. Was tipped off by Sebastian Zara the youtube scent reviewer re Tempo in which he compared it to the original LIDGe which he is a big fan of but was discontinued. I only know the current L'instant which is more complex and has more layers than Tempo. I like L'instant a lot. Its classic, elegant and slightly dirty. Tempo is more linear and smooth. Tempo prob has more appeal for more people, is a very nice wearable scent while still having some art to it. L'instant is more male. Tempo is more unisex. More subtle. Performance is not stellar (based on sample, could be dif from the bottle). Neither are excellent at projection. Wear for personal or up close experiences.