Combine with songs that are top hits in some genre

[velocitatem]

say you have:

let weights = [0.7, 0.3]
// say for BPM
let sampleAverage = 120,
    targetAverage = 160;

let data = {
    bpm: weights[0] * sampleAverage + weights[1] * targetAverage
}

console.log(data);