The tag singing-scientists appears in these 3 comics:

• 2127: Tight Choreography (Tags: marten, marigold, singing-scientists)
• 2145: Birthday Presence (Tags: marten, hannelore, hannelores-dad, singing-scientists)
• 2146: Applause Discouraged (Tags: marten, hannelore, hannelores-dad, singing-scientists, marigold, francis, bernadette-case, abby)