-- riRandN ; two channel sin tones ; harmonic series
sinOsc ar (55 * X.randN 2 1 17) 0 * 0.1

-- riRandN ; 5-channel sin tones ; harmonic series
splay (sinOsc ar (55 * X.randN 15 1 5) 0) 1 0.1 0 True

-- riRandN ; 15-channel sin tones ; harmonic series
splay (sinOsc ar (55 * X.randN 12 1 17) 0) 1 0.1 0 True

-- riRandN ; two channel sin tones ; harmonic series ; id
sinOsc ar (55 * X.randNId 2 'α' 1 17) 0 * 0.1

-- riRandN ; 5-channel sin tones ; harmonic series ; id
splay (sinOsc ar (55 * X.randNId 15 'α' 1 5) 0) 1 0.1 0 True

-- riRandN ; 15-channel sin tones ; harmonic series ; id
splay (sinOsc ar (55 * X.randNId 12 'α' 1 17) 0) 1 0.1 0 True