it's certainly not a good idea to try to play Motörhead after one month of bass playing.
Most songs are way to fast for a beginner. Lemmy plays a lot of open strings and powerchords, both things rather uncommon on bass
and hard (if not impossible) to handle for a beginner. You should learn yor basics for a year or so, then return to Motörhead songs.
Besides that: Only a Rickenbacker sounds like a Rickenbacker. You will not get THAT sound with any other bass.
Lemmys Marshall Amp is cranked up to the max and creates a very special sound, it's very different from what you get from a solid state amp.
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MHB 3039
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After listening for over 30 years, searching and waiting for alternatives, I understood that there will be no other band like Motörhead. Never.