[sdiy] new member, small question

[creekree at gmx.de]

hi everyone,

i just joined this list.
let me start by asking a probably simple question, which puzzles me 
nonetheless....

i am short of a transistor MPS6515 and i seem to be unable to find it 
without great effort.
is there a known and common substitute for this one?

i´d need it for an ETI hand clap synth, as published in the december 
issue of 1982.

thank you all,

creekree