Hi Stefan,
> In the example below, I would need wider bars so that the metronome markings
> don't get in the way.
> How could I do this?
\markLengthOn is your friend:
%%% SNIPPET BEGINS
\version "2.22.2"
musik = {
\markLengthOn
\tempo "poco meno mosso" 4=69
c'2 d'
\tempo "a tempo" 4=76
c'2 d'
\tempo "poco meno mosso" 4=69
c'2 d'
\tempo "a tempo" 4=76
c'2 d'
} % Ende musik
\new Staff { \musik }
%%% SNIPPET ENDS
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