-- rails (jmcc) #2 ; texture=overlap,3,2,4,inf
let n = 20 {- resonant modes -}
    e = dust ar 100 * 0.04 {- excitation -}
    f = xLine kr 3000 300 8 DoNothing {- sweep filter down -}
    l = line kr (rand2 1) (rand2 1) 8 DoNothing {- sweep pan -}
    r = X.linRandN n 200 3200 0
    a = mceFill n (const 1)
    t = X.randN n 0.2 1.2 {- ring times -}
    k = klank (resonz e f 0.2) 1 0 1 (klankSpec_mce r a t)
in pan2 k l 1

-- rails (jmcc) #2 ; texture=overlap,3,2,4,inf ; id
let n = 20 {- resonant modes -}
    e = dustId 'α' ar 100 * 0.04 {- excitation -}
    f = xLine kr 3000 300 8 DoNothing {- sweep filter down -}
    l = line kr (rand2Id 'β' 1) (rand2Id 'γ' 1) 8 DoNothing {- sweep pan -}
    r = map (\z -> 200 + linRandId z 0 3000 0) (id_seq n 'δ')
    a = replicate n 1
    t = map (\z -> 0.2 + randId z 0 1) (id_seq n 'ε')  {- ring times -}
    k = klank (resonz e f 0.2) 1 0 1 (klankSpec r a t)
in pan2 k l 1