beet ls Bluetech | xargs -h
xargs: invalid option -- 'h'
Usage: xargs [-0prtx] [--interactive] [--null] [-d|--delimiter=delim]
       [-E eof-str] [-e[eof-str]]  [--eof[=eof-str]]
       [-L max-lines] [-l[max-lines]] [--max-lines[=max-lines]]
       [-I replace-str] [-i[replace-str]] [--replace[=replace-str]]
       [-n max-args] [--max-args=max-args]
       [-s max-chars] [--max-chars=max-chars]
       [-P max-procs]  [--max-procs=max-procs] [--show-limits]
       [--verbose] [--exit] [--no-run-if-empty] [--arg-file=file]
       [--version] [--help] [command [initial-arguments]]

Report bugs to <bug-findutils@gnu.org>.
Traceback (most recent call last):
  File "/usr/bin/beet", line 9, in <module>
    load_entry_point('beets==1.0b9', 'console_scripts', 'beet')()
  File "/usr/lib/python2.7/site-packages/beets/ui/__init__.py", line 601, in main
    subcommand.func(lib, config, suboptions, subargs)
  File "/usr/lib/python2.7/site-packages/beets/ui/commands.py", line 605, in list_func
    list_items(lib, ui.make_query(args), opts.album, opts.path)
  File "/usr/lib/python2.7/site-packages/beets/ui/commands.py", line 597, in list_items
    print_(item.artist + u' - ' + item.album + u' - ' + item.title)
  File "/usr/lib/python2.7/site-packages/beets/ui/__init__.py", line 73, in print_
    print txt
IOError: [Errno 32] Broken pipe